Greenhouse Gas Research Paper Example | Topics and Well Written Essays - 1000 words

Greenhouse Gas - Research Paper Example This gas largely contributes to the occurrence of greenhouse effect in terms of generating large amount of heat in the earth surface. Relevant measures for reducing the impact of greenhouse gas on the environment might include working collectively in accordance with Community Greenhouse Gas Reduction Plans (Oswego City School District Regents Exam Prep Center, 2011). CFC- It stands for chlorofluorocarbon. It generally relates to a gas or an organic compound that is formed with the combination of chlorine with fluorocarbons. CFC is mainly utilized for the purpose of creating refrigerants, propellants and also as solvents. Its mass emissions can create openings/holes in the atmosphere’s ozone layer. Also, it can result in creating mass depletion of ozone. However, appropriate measures can be taken for conserving the environment and the overall atmosphere from the ill-effects of CFC. Hydro fluorocarbons (HFCs) can well act as a substitute for CFC as it contains certain chemicals that are not as harmful as the components like that of CFC (Oswego City School District Regents Exam Prep Center, 2011). Air Pollution (Carbon Monoxide) - The addition of harmful gases, biological materials as well as particulates and various other waste particles eventually makes the air to be polluted causing various sorts of diseases to the humans and animals. In this similar concern, Carbon Monoxide can be duly considered to be one of the most harmful gases which pollute air by a greater level. Pollution of air by a greater level can lead to serious impacts such as degradation of air. However, it can be controlled by installation of proper smoke emission systems in the factories and introducing pollution testing centers among others. (Oswego City School District Regents Exam Prep Center, 2011). Water Conservation-The various resources of water and their forms of purity ultimately determines that whether water is clean or not. It is worth mentioning that the level up to which the resources of water are conserved might also result in making pure supply of clean water which can be typically acknowledged as water conservation. However, by adopting along with executing latest and effective water recycling methods as well as water initiative programs, the significant aspect of water conservation program can be enhanced by a significant level (O swego City School District Regents Exam Prep Center, 2011). Land Pollution-It broadly refers to the degradation of the surfaces of the earth and land. It can be affirmed from a broader outlook that the misutilization of land and its resources impose adverse impact upon the overall environment by a greater degree. However, by following certain affective measures such as afforestation, contour ploughing as well as terracing methods and construction of dams among others can lessen air pollution by a certain degree (Oswego City School District Regents Exam Prep Center, 2011). u06d1 In this part, relevant discussions pertaining to Polylactic Acid (PLA) Decomposition technology and the pros as well as cons associated with this technology will be highlighted upon. It can be apparently viewed that this particular technology has both advantages along with disadvantages. In terms of advantages, it can be affirmed that the corn-based plastics do not require much of oil and also ensure less use of traditional plastics. With the execution of the aforesaid technology, this particular plastic segment might prove in

Discussion of Literature Set in Dystopian Societies Essay Example for Free

Discussion of Literature Set in Dystopian Societies Essay This paper takes a look at three renowned dystopian authors; George Orwell, Anthony Burgess and Aldous Huxley and compares the dystopian societies that are described in their respective novels 1984, A Clockwork Orange and Brave New World. The ways in which the rights and freedoms of the citizens in each of their novels are suppressed and controlled is described with particular reference to the use of propaganda, language, sexual relationships and violence. The paper will progress to consider the ways in which the protagonists attempt to rebel from their situation and overcome cruel and unfair laws in order to escape the society. In discussing the ability of characters to overcome the unjust constraints of their society, it is worthwhile considering in some detail what a dystopian society is and how it is manifested. The concept of dystopia is inextricably related to the idea of Utopia, a theory that was developed originally by Plato in Republic and further explored by St Thomas More in Utopia. Whereas Utopia is envisaged as a perfect society where subjects live peacefully side-by-side, dystopia is the antithesis of this; â€Å"dystopia was invented to denote a bad place. Utopia expresses desire, dystopia fear† (Aldridge, 53). Quite often a dystopian society is one that is believed to have formed as a direct result of unsavory actions that were taken in order to achieve a utopian society; the methods used to solve problems and assert control lead to undesirable outcomes. In literature a dystopian society often has a number of distinct characteristics. One of which is the manipulation of one group of people by another. A Clockwork Orange, 1984 and Brave New World (BNW) are all examples of novels that depict such a society. In all three novels a minority group of people have acquired the power to control the citizens and they utilize this to command and dictate every element of their subject’s lives. Psychological oppression is in evidence in all three novels and the characters are limited in their thoughts and expressions. In both 1984 and A Clockwork Orange, the dystopian society is represented by violent and disturbing images. Fear and hate is utilized as a means of controlling the population and, as described by O’Brien in 1984, a strong correlation is formed between mental and physical being, â€Å"We control matter because we control the mind. Reality is inside the skull† (Orwell, 331). The prime emotion that is encouraged in the population is that of fear and the threat of brutality and torture the protagonists face entail that they are able to suspend even their own thoughts in order to evade punishment. Winston permits himself to think only of those subjects and issues that he has permission to think of, whereas Alex specifically avoids thoughts of violence in order to eliminate the chance he will become violently ill as a result of the side effects of the Ludivico he experienced at the government’s hands. In both cases the protagonists are no longer able to freely express themselves, their fear psychologically controls them and their entire mental thought processes altered as a direct result of this. Whilst A Brave New World, also describes a society where people’s thought processes and actions are controlled, this control is achieved in a very different way; through drugs and sex. Immediately form birth, the citizens are physically, chemically and psychologically encouraged to be happy and content. Where, in 1984 and A Clockwork Orange, the characters are punished for rebelling against the constraints of the society in which they are placed, in A Brave New World the people are provided with rewards for following the doctrines of their leaders. In this novel the subjects are conditioned from an early age to accept the values of the ten world leaders and they are indoctrinated to a value system that is based on superficial pleasures. The leaders thus control their society by limiting their aspirations and desires; the people accept simple things and are thus unlikely to rebel against their leaders. In all three novels, the ways in which the dystopian society is controlled is physically and visually represented by the use of propaganda. In 1984 the government literature, videos and advertisements are aimed at enforcing the state of fear that they have created. Reality is purposely altered in order to inspire feelings in the nation, feelings that can ultimately be used by the government to assert control and prevent rebellion. Clearly the propaganda utilized in 1984 is very effective and stirs strong emotions in Winston and the people in his social group and he describes the effects as they watch a film and experience, â€Å"a desire to kill, to smash faces in with a sledgehammer seemed to flow through the whole group of people,† (Orwell, 16). In A Clockwork Orange propaganda is also of immense significance and is utilized to control the feelings and emotions of the subjects. In this novel, two main forms of propaganda exist. The Ludivico Technique represents an outright propaganda, where the subject takes drugs and observes negative images in order to form associations with such images. In Alex’s case watching the repetition of violent images causes him to feel physical pain at the thought of violence and thus the propaganda serves to stem his aggression. Mass media is also utilized, as in 1984, and subliminal messages are utilized to encourage the populace to obey the state. Propaganda is observed in the posters in Alex’s home and the effectiveness of this is evidenced by impact that the images have upon him both prior to, and post, his Ludivico treatment at the state’s hands. Prior to his experience he seems unable to associate with the graffiti ridden images in the poster and he cannot recognize the significance of the visuals. However, after his treatment the poster appears clean and renewed and is able to fully recognize their message. A Brave New World also features the use of propaganda as a means of controlling the emotions and free will of the citizens. Fordisms are used to assert the supremacy of their leader and the inhabitants of society are fed subliminal messages as they sleep. They have no free will and thus become dehumanized. A further means by which the dystopian society engendered and controlled within the three novels in through the encouragement, or discouragement, of social interaction. In 1984 the subjects of society are sexually repressed and sex is permitted for procreation purposes only, â€Å"to beget children for the service of the Party (Orwell, 69). Sex is no longer associated as being pleasurable and natural but instead becomes an unemotional procedure. In A Clockwork Orange Alex is unable to accommodate thoughts of sexual pleasure as his treatment entails that he now associates this with violence and thus experiences pain at the thought of partaking in a sexual act. His inability to behave as a normal man transpose him into the â€Å"clockwork orange† (Burgess, 96), he is a machine incapable of experiencing and fulfilling his natural urges. In both 1984 and A Clockwork Orange the mechanical, unemotional feelings attributed to sex and lust serve to dehumanize the characters and thus prevent them from feelings and emotions that could place the rule of the governments at risk. In Brave New World the government openly encourages sex as it is recognized as a means by which sexual desire can conquer and eliminate all other emotions. In this novel babies are artificially created in laboratories and sex therefore serves the purpose of pleasure alone. Family units cannot be formed as babies are without parents and thus the subjects do not form bonds and have become promiscuous. Although the use of sex as a control mechanism is different, like 1984 and A Clockwork Orange the intention is the same, to remove emotions from the subjects. A crucial characteristic of the regimes in place within the dystopian societies concerns language and communication. Language, as a means of communicating and forming relationships with others in society, is suppressed and with it is the extent of human interaction. The limit on language in all three books serves to limit free thought. In 1984 Newspeak is utilized as a means of brainwashing members of society and forcing them to think in a predetermined manner. In both Brave New World and 1984 the government’s intention to diminish the vocabulary reflects their plans to further diminish the thoughts of their public; without the words to communicate they are unable the commit thought crime, â€Å"In the end we shall make thought crime literally impossible (†¦) there will be no words in which to express it†. (Orwell, 200-201). In A Clockwork Orange Alex’s use of language acts as a means by which he can rebel from society. Nadsat allows him to communicate with the members of his gang and thus achieve the human interaction that the government attempts to suppress. In addition to this it serves as a means by which the unwelcome behaviors exhibited by Alex can be separated from the rest of the society, who, as with 1984, do not have a vocabulary capable of expressing such words. A further commonality between all three novels is that of rebellion, with the main characters in all three books actively rebelling against the system into which they have been indoctrinated. Winston, Alex and John all begin to question the merits of their society and, in all three cases they utilize a past reference as a means against which they can assess their current situation. For Winston this is his diary (which allows him to record the past and therefore have a term of reference), for Alex it is his meeting with Pete and for John it is Shakespeare’s Othello that acts as a significant prompt. Winston’s rebellion is manifested in three main ways. He commits the crime of keeping a diary, he partakes in a sexual affair and he joins a brotherhood. His actions reveal that he has realized the ills of the society and is trying to actively prevent himself from being fully indoctrinated. However, his efforts are not entirely successful. Through his capture and punishment in room 101 he is ultimately forced to love Big Brother and he rejoins the society as a fully integrated member. John too is not entirely successful in his rebellion against the repressive society in which he has been born. He attempts to rebel by refusing to partake in sexual contact, discourages the use of the drug soma and eventually causes a riot. The violence his actions engender causes a frenzied orgy which he himself takes part in. Such an orgy is a manifestation of the very society against which he is trying to rebel and he takes the only action that he feels remains, he kills himself. Finally, in the case of Alex, the effects of his treatment entail that he is forever changed and his attempts at violent behavior and rebellion are put to an immediate halt. However, unlike Winston, there are indications at the end of the novel that he is beginning to free himself and his ability to think and behave as an individual is being renewed. His reaction to the appearance of his friend Pete alert Alex to the changes he needs to make in his own life. However, his use of the Nadsat when speaking of his hope for the future, â€Å"Tomorrow is all like sweet flowers and the turning vonny earth and the stars and the old Luna up there (Burgess 191), indicates that he is beginning to break from his control. Whilst rebellion against doctrine is present in all three of these novels, so is the reality that the rebellion has failed. In every case there is no real evidence that the dystopian society has been changed as a result of the protagonist’s actions and the characters appear to have been largely isolated in their ability to recognize the ill merits of the way in which they are being ruled. The efforts to overcome the cruel society are short-lived and the message portrayed is that members of a society cannot overturn their conditions alone; to truly escape the unfair laws citizens need to act as a collective whole. Works Referenced: Aldridge, Alan. Consumption (Key Concepts). University Park, PA: Polity, 2003. Burgess, Anthony. A Clockwork Orange. New York: W. W. Norton Company, 1986. More, Thomas. Utopia (Penguin Classics). London: Penguin Classics, 2003. Orwell, George. Nineteen Eighty-Four. New York: Plume, 2003. Plato. Plato: The Republic (Cambridge Texts in the History of Political Thought). New York: Cambridge University Press, 2000.

The Wizord Of Oz Symbolizing The Gilded Age :: essays research papers

The story ( The Wonder World of OZ ) written by Frank Baum is filled with symbolism. Symbolism a style of writing using symbols and indirect suggestion to express ideas, emotions, people etc. The story gives a lot of symbols relating to the gilded age in American history which took place from 1880– 1900. The main symbols are: Dorothy, the Land of Oz, lion, Emerald City, flying monkeys. The first person the story talks about in the story is Dorothy. She’s a girl that comes form Kansas and was carried by a tornado. In the story when the reader first meet Dorothy he finds out that she is very curios, and straight forward. Dorothy in the story represents the average farmers in Kansas. On the other hand the tornado represents the change that has come up on farmers â€Å" The Industrial Age.† Therefore the story creates a comparison between Dorothy and her new challenge getting back home and the farmer’s industrialization problem and fall of crop prices. The Land of Oz was a whole new area, which acted like a whole new country. I had it’s own system. Dorothy was scared of it she didn’t know the laws and how the people acted. To me I think The Land of Oz symbolizes the Western US. That is because the Western US’s lacking of power and it has no voice, they only follow the east. The Land of Oz is closely related to the Western US due to the fact that they are only under the wizard’s rule and that the people have no voice. The munchkins organize themselves in order for them to get rid of the witch. And so did the westerners they created Alliances so they can get rid of problems much faster and much easier. The loin in the story has no courage and is seeking courage form the wizard in order for him to be the king of the jungle. He tries to scare people or even hurt them but he cant. The lion creates a direct comparison with William J. Bryant. This is because when William Bryant tried to solve the problem that was going on in the US Treasury by improving the treasury with free gold. Both the lion succeeds in protecting his forest and so does Bryant by receiving a higher rank in office, and becoming more popular. Another straight comparison is Emerald City.

Essay --

Gay marriage has been a topic of discussion between many people. It is talked in good and bad ways, due to a person’s beliefs or even just their overall opinions. The topic has been present for many years. Throughout the years many things have improved for the rights of the same sex couples. It included difficult times for these couples. They had to fight for their rights. They had to fight people that did not believe that they have these rights. According to Ronald Bailey (page 1), same sex marriage impacts traditional marriage. He also stated that it undermines or looks down upon conventional marriage of heterosexual marriage. The divorce rate among same sex couples decreased. After decades of falling the marriage rate and fertility rate slowly increased and still the divorce rate is down. The divorce rate in different sex couples decreased due to the same sex marriage increasing. In 2003, the divorce rate in Massachusetts was 2.5 per 1,000 people. Then in 2004 the marriage rate jumped 15%. Lesbian couples were 3 times more likely to divorce than heterosexual couples. Gay marriage couples also have kids. Nearly 20% of same sex couple houses have children. Close to 84% of them have biologically related children. Los Angeles reporters stated that 37% of same sex couples have had children of their own in their houses before. By the time that the children are of 17 years old 55% of lesbian couple are separated compared to the 36% of heterosexual couples according to The National Survey of Family Growth. Unlike divorce in heterosexual parents children from divorced homosexual do not experience social or psychological problems. When they divorce 75% of the lesbian couples share custody. In heterosexual (page 2) couples 65% of mot... ...ame the first state to pass in the United States to legalize same sex marriage, governor Arnold Schwarzenegger vetoed this bill. Then 3 years after this on June 16th 2008 California began allowing same sex marriage licenses. Proposition 8 was then launched, proposition 8 was launched to deny same sex marriage rights. Then in 2009 Maine governor John Baldacci signed a freedom to marry bill, which had support from both branches of the state legislature. Even though both legislatures gave support there were also opponents. These opponents also gained support from national organizations which launched a referendum to ban same sex marriage. Voter reserved the legislature in 2012, which again allowed same sex marriages in Maine. There were also out- of- state marriages in New Mexico and Rhode Island. It is a civil right to many the person of one’s choice.

Cardiovascular Endurance of the Genders Question Essay

Cardiovascular Endurance of the Genders Question- Does weight and differences of age have to do with different heart rates and recovery times with the step test experiment? Independent Variable Pre- Exercise Heart Rate Dependent Variables 1. Post- Exercise Heart rate 2. Change in heart rate 3. Recovery Time Hypothesis – If a subject being tested is fit then there should not be a big change in heart rate and there should be minimal recovery time to get back to the normal heart rate in which they started. Experiment Protocol- 1. Testing all members of the group and recording the results. 2. Measure pre-exercise pulse rate using a pulse monitor of the first subject 3. Making sure the first subject is in sequence with their steps to the metronome 4. This sequence should be 3 minutes with a rate of about 25 steps a minutes on a six inch step 5. After the exercise the subject has to sit down immediately 6. The pulse monitor needs to be taken out. 7. Then measurements should be taken of the subjects post exercise pulse rate 8. Then the timer was taken out. 9. Next the subjects pulse rate was monitored until it returned to the pre-exercise pulse rate which is the recovery time. 10. Steps 2-5 had to repeated for others within in the group 11. After everything was completed the results were compared with other groups in the class. The measures that were taken to ensure consistency throughout the experiment were to just do everything at relatively the same pace with every subject so there would not be any dramatic changes in data. Conclusion- In conclusion it does not matter whether you are male or female when it comes to cardiovascular fitness. This is because cardiovascular fitness is entirely based on a test that assesses your fitness level based on how quickly your heart rate recovers after exercise. The fitter you are, the uicker your heart rate will return to normal after exercise. I accept my hypothesis because my results from the people in my group as well as the class showed that the fitter you are the quicker your heart rate will return to normal. My conclusion could possibly be different If I only analyzed the data gathered by my lab partners of my table because this would not really allow me to determine if cardiovascular fitness is actually based off gender or fitness due to the high ratio of three women to one man compared to the whole class. Improvements to the experiment- 1. one way to improve this experiment would be to have a chart that shows good, poor, or average Heart rates to have a better idea to make comparisons between gender cardiovascular fitness 2. Another way to improve my experiment would be to be more consistent with my group members in transitioning from the pulse monitor to the timer so we don’t have to start over 3. Another way to improve this experiment would be to run it longer than three minutes and more than once to see if the data is consistent.

Application of the spiral of silence theory Essays

Application of the spiral of silence theory Essays Application of the spiral of silence theory Paper Application of the spiral of silence theory Paper This public opinion concept refers to the way in which ‘the commonwealth is held together by prevailing views, habits and prescribed behavior;’ from which none can deviate ‘without running the risk of being ostracized’. (Noelle-Neumann, 1989, p. 6). The fear of isolation is the centrifugal force that accelerates the spiral of silence. (Griffin, E. M. ,2009). It is believed that most of the reason of the following suit behavior is that people like to be respected and do not want to be isolated. But, this theory still has some limitations. The critics of this theory most often claim that individuals have different influences that affect whether they speak out or not. Research indicates that people fear isolation in their small social circles more than they do in the population at large. When they are at work, they are in their small social circles, this fear of isolation is stronger than the fear of being isolated from the entire public. Also, personal characteristics will have an influence on whether a person will willingly speak out. Naturally, if one has a positive self-concept and lacks a sense of shame, that person will speak out regardless of how she or he perceives the climate of public opinion. (Ross, C. , 2007). Another important element for people not to speaking out is culture. What culture a person lives in affect their minds directly. Not every culture holds freedom of speech in as high regard as the United States, and in some cultures, open expression of ideas is forbidden. (Ross, C. , 2007) Scheufele Moy, further assert that certain conflict styles and cultural indicators should be used to understand these differences. Although the spiral of silence theory caused a lot of controversy, it still has a practical significance. Internal communication plays a key role in all organisations, particularly regarding employee engagement. Nowadays, all companies are experiencing rapid growth. P. Sanchez(1999) asserts that doing business and managing change makes effective internal communication a critical success factor. When internal corporate communication becomes smooth, managers could collect useful advice and wisdom, understand different point of view and evaluate different levels of suggestions, providing more reference for their decision-making. Maybe a little suggestion from one subordinate can have a greatly influence on the interests of the company. Furthermore, through the communication, employees feel comfortable and are respected, it will establish their loyalty and make them care about the development of not only themselves but the whole company. In fact, their engagements directly affect the company’s performance. The theory provides a unique perspective that the final consequence of the discussion in company is not the rational opinions and may be the convergence of the strong opinions. Sometimes, the strong opinions are not accurate and result in the wrong choice of managers. Because of the spiral of silence, some people hold their opinions in mind and do not speak it out, they will lose their enthusiasms of their work and make no contribution to the company. Usually, those people’s opinions are known as adverse opinion, which are opposite to the leadership or the mainstream. It may be correct, also may be wrong. So we cannot just treat it as wrong opinion. Only if the administrators make it clear, the employees would disclose their true own opinion. It is not normal that there is not a voice against the majority opinions, this actually means managers do not play a good role in creating a free, democratic environment for employees. As time passes, the staff are too lazy to put forward their opinions. If so, the managers of company will lose so many value aspects of the different voice. Amounts of adverse opinions may stimulate some other new, fresh ideas, sometimes these ideas are even better than the original advantageous opinions . For minorities to stimulate the thinking of the other group members, the minorities have to share their opinions. Factors that might encourage people to express minority opinions would include having personal qualities that can offset the risk ( Hollander, 1958); getting support for their position ( Latane Wolf, 1981; Tanford Penrod, 1984); and having a positive and accepting social atmosphere in the group ( Hackman, 1987). In fact, creating a nonjudgmental atmosphere is the cornerstone of group discussion techniques designed to maximize participant contributions (e. g. , Delbecq, Van de Ven, Gustafson, 1975; Osborn, 1957). There is no doubt that the existence of the spiral of silence in company is the last thing managers want to see. If it exists, minority will not comment about many things, they bend to the public opinion. Several different opinions precisely are the indispensable condition of making correct decisions. Critically, that doesn’t mean managers should adopt the minority opinions all the time. When discussing adverse opinions, managers should not reject them flatly, but let employees fully expound them views and reason, and then analysis their opinions seriously. The reasonable part should be accepted and the unreasonable part should be abandoned. Since some few people’s insights are profound, decision-makers need to determine whether the strategy should be changed. Managers must be able to recognize those wrong opinions, and according to their different properties, adopt appropriate methods. In order to maintain the enthusiasm of staff, it is important for managers to treat all opinions of the staff equally, no matter they are right or wrong, positive or negative and valuable or not valuable. For those right and valuable opinions, managers should not only verbally accept them, but give the presenters praise and reward. For those abandoned opinions, it is important to encourage the presenters to continue to point their opinions out. Only totally understand how the spiral of silence theory works in the enterprise and treat the disadvantageous opinions properly, administrators could create a smooth channel of internal corporate communication.

The Average Student Plan Essays

The Average Student Plan Essays The Average Student Plan Essay The Average Student Plan Essay Having looked at various other methods of data collection I have come to the conclusion that I will base my work on the average student. Firstly I think it is appropriate that I define what the average student actually is. There are different interpretations as to what an average student is, for adults perhaps teachers they may base their ideas as to what the average student is on exam results. Other people may believe the average student is based on what sports they play, what genre of music they listen to or what type of books they read. However for the data collection I will be carrying out I will base my data on a students physical attributes, as this will enable me to use higher-level maths techniques, which will be later explained. Due to limitations in working time I have decided to focus on recording just the height and weight of males and females. I have decided to focus on height and weight because they are continuous data therefore it will be possible to apply higher-level maths techniques. Another reason for selecting this data collection is that the data is easily accessible. There are two hundred and seven pupils in my year and obtaining their measurements will not be a problem. I will hopefully have the opportunity to compare my results with the National Data from the Child Growth Foundation (1996), which my teacher has recommended we find and use because using this I will be able to compare upper and lower quartiles and the medians. Firstly my aim is to research and discover some hypotheses about an average student using statistical techniques. The three hypotheses I have selected will be later explained For my coursework I have the opportunity to select from four methods of sampling. Not all sampling methods will fit with my data collection as some may affect the reliability of the results. The term given to this is bias meaning if an item in a population does not have an equal selection opportunity from a sample, it is said to be bias. An example of this that I am aware of and may occur in my collection is, from a population of forty there would have to be twenty males and twenty females for it to be fair. If it were any different to this then it would be bias. Here are the four methods of sampling I can choose from when carrying out my data collection. Systematic Sampling An example of this sample would be the selection of a 10% sample by going through the population picking every tenth item or individual. The disadvantage of this method is this would only provide a representative sample if the population was arranged in a random way and not in a way that might introduce bias. Information taken from OCR Graduated Assessment Stages 910 Textbook. Attribute Sampling The selection of the sample is made by choosing attribute such as head size and height from a list of people on the basis of their birthday being the first of the month and trying to identify any relationship between the two. Stratified or quota sampling The population is divided into strata or subgroups and the sample chosen to reflect the properties of these subgroups. An example of this would be if a population contained three times as many people under the age of 25 as over 25 then the sample should also contain three times as many people under 25. Information taken from OCR Graduated Assessment stages 910 Textbook. Random Sampling This is when there is no knowledge about a populations characteristics, for example any knowledge about the ages and gender in the population. In this case a sample has to be selected on the basis that all items are equally likely to be chosen. To ensure the sample is random and as accurate as possible the sampling must be repeated several times and then have the results averaged. The sample I have decided to use is systematic and random sampling this is because it would save a lot of time because my population is of two hundred people. In addition to this I have decided to work out an average using a percentage of the population. I have decided to use twenty percent, forty people, twenty males and twenty females to ensure it is a fair test. The hypotheses I will be investigating will be, * You would assume that as heights increase so to will weights. * You would think that on average boys are heavier than girls. * You would think that on average boys are taller than girls. Having these hypotheses I will be able to test the relationship between height and weight and also to compare the results for males and females. When comparing genders I will be using cumulative frequency, histograms, standard deviation and normal distribution. Once I have obtained my results I will transfer them to a spreadsheet so I can clearly set my results out. I will select the pupils I need for my investigation, twenty males and twenty females and measure their height and weight. I considered working with another person to help me but I believe I can work just as well on my own and still be as accurate. Each pupil in the sample will be treated the same this is to avoid an unfair investigation. When measuring height and weight each person in the sample will remove their shoes as this increases height and weight. I am aware that there will be complications through the investigation for example I need to check equipment in case they are slightly inaccurate. Perhaps other mistakes such as the student moving slightly will alter the readings and therefore not providing true results. I intend to be as accurate as possible and consistent with my recordings treating each student the same. Once my data has been recorded it then has to be sorted in order, firstly I will separate the data into genders and by using spreadsheets on the computer I can arrange the data into ascending order therefore when I use Cumulative Frequency Graphs I will be able to find the range numbers easily. I will be able to compare the different sets of results and from this point highlight any potential anomalies. With the results I obtain I have the opportunity to compare my results to the National Data. The appropriate average differentiates with graph work for example with Cumulative Frequency I will be working with median however I can compare this value with the mean data and comment on the graph distributions. Once I have the collected data I will then look back to my hypotheses and determine whether or not I was correct. As I mentioned earlier I will attempt to use higher-level maths techniques. I will be using Pearsons Product Movement Correlation Coefficient to test for any relationships between data. I will also include evidence of Cumulative Frequency diagrams and Box Plots as an attempt to prove any relationships between sets of data. I will also be using Histograms and Standard Deviation to find certain things such as the spread about the mean and using these values to compare with each set of results.