Investigating the Relationship Between Height and Weight

Investigating the Relationship Between Height and Weight

For my coursework I was given a reasonable amount of data based on

‘Mayfield High School’. Mayfield High School is a school for students

aged 11 to 16.

Hypothesis 1

For my first hypothesis I have decided to make an exploration on

whether, ‘In general the taller you are the more you weigh’ I predict

that the more a person weighs the taller they will be, meaning there

will be a general pattern. But there will be some exceptions of people

that weigh a lot and are short and of people that are very tall and

don’t weight too much. In other words I also expect that for any given

height that I will find a wide variation in height. I will set out a

method to prove my hypothesis to be correct.

It can be said that because the data is based on a real school, the

data will be reliable and accurate and can help me come to sensible

conclusions. The school’s data contains information for roughly 1150

students, as you can imagine this will be very hard to analyse because

there would be a lot of data and graphs to present and the diagrams

could be difficult. It is for this reason that I have decided to take

a random sample of data for 30 girls and 30 boys in Year 7, which will

be followed by 30 girls and 30 boys in Year 11.

I had to choose a method that meant that all the pupils had an equal

chance to be picked, by doing this it made my sample non-bias. I ended

up deciding to use the random number generator method, which involved

the use of a calculator. I gave each student in the school a specific

number, so I could easily locate them. The numbers would vary

depending on year group and gender.

· I would go to my calculator and generate a random number by pressing

‘SHIFT’ and ‘RAN#’ from 0 to 1(e.g. 0.167)

· Then I would multiply the figure by the total amount of students