Investigate the relationship between the height and weight of boys and girls at Mayfield High School.

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Data Handling Task: Mayfield High School

Aims: The aim of this task for me is to investigate the relationship between the height and weight of boys and girls at Mayfield High School. In order for me to carry out this investigation, below, I will briefly explain 5 hypotheses that I have constructed and later will test these theories by using the data on the school.

Hypothesis:

  1. Boys in year 7 will weight less than in year 9 as they would have grown a substantial amount and therefore put on some weight and would be entering puberty in which boys bodies enlarge due to puberty so they will be bigger and heavier.
  2. For the same reason as I have stated in the theory above, I believe that boys in year 7 will be sorter than in year 9.
  3. Girls encounter puberty at a younger age to boys therefore mature younger so girls in year 9 will be taller than boys in year 9 as the girls would have completed puberty and be fully developed while the boys are just starting the process.
  4. Continuing along the same lines as my previous hypothesis, by year 11 boys will have completed puberty and would have caught up, and overtaken girls so will be taller come year 11.

In order for me, after I have collected all my data, to find out the different types of statistics on my computer like; correlation, median, and the quartile ranges I will use the following equations on my computer:

Lower Quartile: ‘=QUARTILE (_:_,1)’

Upper Quartile: ‘=QUARTILE (_:_,3)’

Median: ‘=MEDIAN (_:_)’

Correlation: ‘CORREL (RANGE OF X, RANGE OF Y)

I will use these equations to find out the results for all my data that I will be using to plot my tables and graphs.

In order for me to find out whether or not my hypotheses or correct it will be close to impossible for me to use the data of every pupil so I will only take around 10% of the people in each section needed and I will use my calculator to find out what 10% to use by using my random button on my calculator. I do by doing the following. If I only had 300 people in one year group, normally when using the random button it will give me options up to 100 names so I will want to limit it to 300 by doing the following, I pout onto my calculator MODE FIX then Shift Ran# X 300 = or whatever amount there is in that year group.

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Hypothesis 1:

Boys in year 7 will weight less than in year 9 as they would have grown a substantial amount and therefore put on some weight and would be entering puberty in which boys bodies enlarge due to puberty so they will be bigger and heavier.

This hypothesis is very simple and basically is saying that in year 9 the boys will weight more than they did in year 7. This would be due to them growing both taller and therefore heavier. I have decided to only use years 7 and 9 in this as ...

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