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Plan I have chosen to investigate whether theheight of the person affects the weight of year 7 girls and boys. The data I amusing has come from a school called Mayfield School, it is secondary data, as Ihave not went and got it my self, which means ...

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Introduction

Plan

I have chosen to investigate whether the height of the person affects the weight of year 7 girls and boys. The data I am using has come from a school called Mayfield School, it is secondary data, as I have not went and got it my self, which means that all the data may not be correct information. There is a total of 300 students in year 7, 150 are boys and 150 are girls. My data is presented in a table, down the first column is the year group with the year groups 7,8,9,10 and 11. Overall there is 1200 students in the school. I am only going to be investigating year 7, do I do not need the rest of the information therefore I will delete all information apart from the year 7 boys and girls. The table also gives me 3 other columns which are number of boys, number of girls, and total. The total of students in year 7 is 300 with 150 girls and 150 boys.

I will compare all the boy students in year 7 weights and heights, then compare all the year 7 girls. For my sample, I randomly selected 30 students from year 7. To randomly select the students I chose to use this way, I pressed SHIFT on the calculator, RAN then times a number, the number that came up is the student I selected. My

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Middle

36

7

Mark

Adam

11

11

Male

1.45

40

7

Danielle

11

11

Female

1.46

45

7

Danielle

12

4

Female

1.47

44

7

Angela

Louise

12

0

Female

1.47

44

7

John

11

11

Male

1.47

41

7

Jessica

11

11

Female

1.48

37

7

Wayne

11

11

Male

1.48

35

7

Mikeal

Christopher

12

6

Male

1.49

38

7

Ben

12

0

Male

1.49

43

7

Max

Conrad

12

4

Male

1.49

47

7

Rachel

Amy

12

2

Female

1.50

40

7

Sohail

Farooq

11

11

Male

1.50

41

7

Sabor

Steve

12

8

Male

1.50

43

7

Maria

Jane

12

5

Female

1.51

38

7

Rhys

12

10

Male

1.51

45

7

Kayleigh

Marie

12

7

Female

1.52

40

7

Abbie

Linda

12

10

Female

1.53

47

7

Sarah

12

2

Female

1.54

42

7

Ieisha

Jane

12

0

Female

1.54

42

7

Jake

12

0

Male

1.54

43

7

Thomas

12

9

Male

1.54

38

7

Elizabeth

12

2

Female

1.55

50

7

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Conclusion

However, looking at the boys table, when I sorted the height and weight into descending order, I found that the boys weight, did go up as the height of the boy did. This didn’t really prove my hypothesis as there isn’t a exact way to say that if a boy is e.g 1.60m that his weight would be 50kg.

Possible limitations of this investigation include, the area that the data was taken from, for example certain parts of the country weigh more than the rest and some parts of the country has taller people etc. Also I may of picked bad data to investigate from, even though the data that was picked out was random.

I think my finding applies to the whole population, as you can’t tell some ones height by their weight or vice versa. You get tall and fat people, small and fat, small and skinny and small and fat, and you get normal weight tall people and normal weight small people and so on…

This investigation could be improved by using a bigger range of data, for example instead of only relying on a sample of 30 people, you could make it into 500. To improve my findings I could of used other diagrams like frequency polygons, stem and leaf diagram or a histogram. I did not feel that it was necessary to use them this time. This would have been more effective if I did as it would make me more confident with my decision and may of made me think otherwise.

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This student written piece of work is one of many that can be found in our GCSE Height and Weight of Pupils and other Mayfield High School investigations section.

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