height and weight of mayfield school
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Height and weight of pupils at Mayfield high school Introduction In this coursework I am going to investigate the relationship of weight between boys and girls, in year 7 to year 11. I am going to check whether gender and how old you are affects the result. As a result from these result's I will compare all the results together and see if my hypothesis is correct. In regard to this the way in which I will test to see that my hypothesis is correct is by first making a pilot test, by randomly selecting number's of all four year's then finally putting all my grouped data together and transforming it into a cumulative frequency table. Hypothesis: However from this I am now going to focus on the weight of boys and girls. In order to get a result this will determine if my prediction was true. I am going to investigate to see whether: * The older you are the more you weigh in year 7 and year 11 ( girls and boys) * I think that boys will weigh more than girls in year 7 and year 11 The reason for me to have such aims and prediction is because I want to be able to challenge those who think the opposite, by gathering my research results, and hoping that my prediction will be correct. The reason why I have predicted that the older you are the more you will weigh is because in reality from what I have seen from my own experience, and noticed is that as people tend to get older ( meaning both sexes), that their body starts to develop which causes an increases in their body mass. This is because it is more likely for girls to start their puberty before boys, which is why we see certain parts as they also start to develop. In contrast to this, I have also made further prediction in saying that boys will weigh more than girls.
Therefore I replaced it with another figure, which is a better representative for the year 7 female. I checked to see if I had picked up on further rouge data, but fortunately I wasn't able to find others, when searching through the rest of my random sample numbers for boy's and girls. As I was going through each of my random numbers for boys and girls, I couldn't stop worrying why I had found some rouge data just for year 7 girls. Therefore I carried out further research which helped me in understanding how the data might of has been misplaced or even miss read. After conducting all my research I then decided to gather the entire of my random number's and put it all onto a cumulative frequency table. This will later determine me of the number of people who each weigh the same or even weigh in between the range of numbers. Therefore this will give me an overall total of my cumulative frequency. The way in which I put together this table is by looking to see my lowest weight and finding out who weighed the most. I then split my numbers into categories and putted all my number going up in fives, for example 33 < x ? 35. I used this method through out my research for boys and girls in collecting the numbers and putting it into a frequency table. The results are shown below: Result 1) Female in year 7 Frequency 30 < x ? 35 2 35 < x ? 40 5 40 < x ? 45 17 45 < x ? 50 14 50 < x ? 55 8 55< x ? 60 2 60< x ? 65 1 65< x ? 70 1 From using the above result I am now going to create a cumulative frequency table. Weight ? 35 ? 40 ?
Therefore I must consider how there will be those who tend to way of my range scale, which is why I may have got some rouge data's. Evaluation: Throughout carrying out the research, in wanting to check whether my hypothesis was correct. As a result to this, I believe that to some extent I would agree in saying that my prediction was correct as, my prediction matches with the result in which I obtained for year 7. However looking at the result in which gained in year 11, I have to say that it differs quite a bit. Furthermore, looking back at the way in which I carried out my investigation, there will certain are of the research in which if I could go back and change it I will complete certain tasks differently. This may include me collecting my sample random number's differently, as I believe that this was a weak part of my findings. The reason for saying this I because, I believe that my sample may have been incorrect, maybe in the way the data's where collected, or by the method used to collect the data's. However despite, the weakness, there where many strength within this project, this included how it was easy to compare the two year groups, as the result in which I gained was to the point. Also when receiving rouge data's I was able to avoid it really well, by replacing it with another one. This made my results reliable, as less rouge data's existed. Conclusion: Overall, I believe the project was successful although I would have had liked to see a much better range within the result, to suit my hypostasis. This is because; if my investigation was very accurate and fairly placed, as I hoped then I believe the result would have some difference to the one I received currently. Moreover, I believe that to some extent my prediction does match with the result but also on the other hand, it may vary. ?? ?? ?? ?? Nazma Khan 11A Maths course work (handling data) Mrs Akbar
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