• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6
7. 7
7
8. 8
8
• Level: GCSE
• Subject: Maths
• Word count: 1693

# HypothesesMy hypotheses is 1) The taller you are the heavier you are.2) Boys are generally taller than girls.

Extracts from this document...

Introduction

Aim

For my data handling coursework I am observing data about students at Mayfield High School. The number of students in each year varies. I have been given the data, so it is secondary data that I am using. I aim is to find the relationship between height and weight from a sample of randomly selected year 11 students. In order to aid this, I shall draw graphs to demonstrate whether or not my hypothesis is correct. Varying the types of graphs will enable me to come up with a more accurate conclusion to my results.

Hypotheses

My hypotheses is

1. The taller you are the heavier you are.
2. Boys are generally taller than girls.

Collecting data required

I started of wanting a random sample of 30 boy’s and 30 girls from the huge amount of data that I had been given. I first considered writing down all the names of the 168 students in year 11 on paper, and giving them a number between 1 and 168, then picking them out of a hat. After some thought, I realised that it would take quite a bit of time.

Middle

Tally

Frequency

1.30 ≤h <1.40

1

1.40 ≤h <1.50

0

1.50 ≤h <1.60

4

1.60 ≤h <1.70

7

1.70 ≤h <1.80

10

1.80 ≤h <1.90

6

1.90 ≤h <2.00

1

2.00 ≤h <2.10

1

Weight (kg)

Tally

Frequency

30 ≤w <40

3

40 ≤w <50

2

50 ≤w <60

13

60 ≤w <70

6

70 ≤w <80

3

80 ≤w <90

2

90 ≤w <100

1

Girls

 Weight (kg) Tally Frequency 30 ≤w <40 1 40 ≤w <50 15 50 ≤w <60 9 60 ≤w <70 5 70 ≤w <80 0 80 ≤w <90 0 90 ≤w <100 0

I found that the mean weight range or the boys, in my sample, was heavier than the girls.

To get the average weight of both boys and girls, I decided to find the mean, mode, median using the main big table on page   , this would mean that I get a more accurate perspective of the overall data. I also decided to find the range. To find the mean weight, I first added all the figures in the boy’s weight column then dived by the total amount of figures there are, which is 30. I.e. 66+63+57+56+…54+62+57 ÷ 30

This then gave me the mean weight of the boys. I did exactly the same method to find the mean height range by using the data in the height column.

Conclusion

A and B to represent the information in the table. I have drawn the boys and girls together for both weight and height range. We can see form the graph that the boys are generally taller and heavier than the girls which confirms my hypotheses:

1) The taller you are the heavier you are.

1. Boys are generally taller than girls.

Evaluation

To improve my investigation I could next time look at a bigger sample of data, rather than just 30. Keeping that in mind, I could use data from another school, possibly from another part of the country. I have evidence to suggest that the link between height and weight is valid if I restrict myself to one year group. I used year 11’s, so next time I could possibly use year 10 and 11.

Conclusion

My hypothesis,

1. Boys are generally taller than girls
2. The taller you are the heavier you weigh

was proven to be correct from my sample of data. I had positive correlations and a slightly greater amount of averages for the boys than the girls. This is pretty much what I expected to happen, though a more definitive difference was expected from me. Despite this, I got a positive result and so I am happy with my end conclusion.

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.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Height and Weight of Pupils and other Mayfield High School investigations essays

1. ## Mayfield. HYPOTHESIS 1: Boys at Mayfield School are Taller and Weigh more on ...

20 = 2.7 rounded of to 3 Note * I then applied the same methods in calculating the number of Girls for my stratified sampling and here is a table of results that I will be using for my data sampling for this particular hypothesis.

2. ## Statistics coursework - hypotheses based on students statistics

12 1 Female 116 1.49 53 7 Harding Tanya 12 1 Female 100 1.55 40 7 Hughes Karen 12 1 Female 132 1.63 51 7 Jones Sarah 12 3 Female 105 1.59 49 7 Khalid Hira 12 3 Female 104 1.19 47 7 Massey Kirsty 12 6 Female 107 1.62

1. ## Maths Data Handling

The standard deviation for the heights of boys in the whole school was 17.37 cm, whereas the standard deviation for the heights of boys in year 7 was 7.72 cm. This means that the standard deviation for the boys representing the boys in the whole school was twice as much

2. ## HYPOTHESIS: Boys at Mayfield School are Taller and Weigh more average in comparison to ...

Degrees Year 8: 269 Divided by 1183 Multiplied by 360 = 82 Degrees Year 9: 260 Divided by 1183 Multiplied by 360 = 79 Degrees Year 10: 219 Divided by 1183 Multiplied by 360 = 67 Degrees Year 11: 154 Divided by 1183 Multiplied by 360 = 46 Degrees Total

1. ## Height and Weight corralarion in boys and girls

The Spearman's rank correlation of the height and weight of the girls is 0.79 which means that there is really strong correlation. The boys scatter graph is overall more closer to the line of best fit than the scatter graph for the girls.

2. ## mayfield course work -boys are generally heavier than girl. This has to do with ...

All these can affect the limitation of data. The Secondary Data was gotten of the school network and I randomly selected 60 students using my calculator. Below is a table of year 7 -9 and 10 -11 secondary data I will be using in this investigation. Student Number Year Group Years Months Gender Height (m)

1. ## I will be testing the following hypothesis in my pilot study: ...

This is necessary when producing graphs or statistical calculations on more than one section of the population together, because taking the whole population into consideration is time consuming and quite difficult. Furthermore, a stratified sample can provide greater precision than a simple random sample of the same size.

2. ## Mayfield High. Hypothesis 1-the older the students, the taller and heavier they will be. ...

After that I will put the data in a table for each year group showing height and weight results. Futhermore I will add columns to show frequency, mid point and total height/weight. I will use this information to work out the estimated means and the modal groups.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to