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# Data handling coursework

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Introduction

GCSE data handling maths coursework

Introduction:

I was given a database full of information from a secondary school. This is called secondary data because I didn’t collect it myself. I am going to compare the height and weight because I know that their bodies will go through some changes. Students are guaranteed to go through puberty some time while in secondary school. When this happens it means that the child is turning into an adult.

Hypothesis:

1. I believe that the taller the person the more they weigh because a taller person is bigger than a smaller so they will generally weight more than smaller people.
1. I think that there is a stronger correlation between height and weight in Y7

Middle

Plan:

• To prove right or prove wrong I have to sample my data for the data I have been given
• I am going to put this into an spreadsheet so that I can analyze the data using a wide variety of mathematic techniques to either prove my hypothesis right or wrong
• I will put my selected data and put it in scatter graphs, whisker plots, averages and measurements. I will examine these and gather evidence to prove my hypothesis right or wrong

Analysis:

The equation of a straight line is y=mx+c. the m stand for the gradient of the line is found by dividing the change in y by the change in x and would equal the KG/M. The change in Y axis equals the x axis. R2

Conclusion

Also if you had more students then it would be a lot more accurate than if you had less people.

Another limitation would be the fact I didn’t have much experience using Microsoft excel so if I did know how to use Microsoft excel well then I could have done this project a lot quicker and saved myself a lot of hassle.

Conclusion:

Looking at my data from the graphs it looks like generally the taller you are the more you weight but not in all cases. I could say with more confidence if I had more sources so that I could have more to compare and get a better, more accurate result, although you will never get a definite answer because there is always going to be an exception to the pattern.

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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