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• Level: GCSE
• Subject: Maths
• Word count: 1928

# I am going to investigate weight, age, gender and height

Extracts from this document...

Introduction

Maths Coursework

I am going to investigate weight, age, gender and height. I am going to investigate whether there is a correlation between the weight and height of people and whether the age or gender affects the weight or height in any way. I have chosen to use all the year groups to take part in my investigation, rather than taking random samples of people from the school, as I think it would make a more interesting project to compare data across the whole school.

I chose these categories as I predict that there will be an obvious correlation between the four of them. I chose weight, height and gender as they are quantitative data and therefore easier to work with.

I predict that as the age of the children increases, so will the height and weight of the children. I also feel that the males will be heavier than the females and ultimately they will have the tallest height, but I feel that the average heights of both the males and the females will be quite similar.

Throughout my investigation, I will go through a line of enquiries in order to prove my hypothesis to be true, or maybe in some cases prove it to be wrong.

Scatter Graph to show the correlation between the children’s height and their age.

This graph shows how as the age of the children increases, so too does the height of the children.

Middle

The correlation of the age and weight corresponds nicely with my original hypothesis. To take my investigation another step further, I am going to see whether my thoughts are correct in thinking that as height increases, so too does weight.

Scatter graph to show the correlation between the children’s height and weight

#

As I expected, this scatter graph shows that as the children’s weight increases, their height does as well, meaning there is a strong positive correlation between the weight and heights of the children in the school. The graph has a correlation co efficiency of 0.4712 which is 47% which shows a strong correlation.

It also shows how most people are between the heights of 1.5m and 1.8m, they are also mainly between the weights of 40kg and 75kg. The correlation between the two would be expected as, as the heights of children increase, ultimately so too will their body mass, and therefore their weight should increase. However, as always there are some exceptions showed by this graph. The graph states that a person of two metres tall only ways thirty five kilograms. I believe that this data could still be legitimate, so therefore I did not delete it from my enquiries.

So far, I have proved my hypothesis to be correct, by proving that there is positive correlation between age, weight and height amongst the school as a whole.

Conclusion

Evaluation

My assumptions have successfully been proven correct. Every scatter graph I plotted was positively correlation, generally showing that as height increases so too does their weight.

During this coursework, I found that there was a lot of false data. It was hard to base an investigation around data that was false or incorrect. To help my investigation, and therefore get better results, I deleted any data that I deemed to be false so that I did not get big anomalies when I came to plotting my graphs.

There are many methods of improving this investigation; an obvious method would be to employ further statistics, which would enhance my investigation and make it much more interesting. I feel standard deviation should have been used as well as the box plots, as it would have given me a measure of spread of data and I could have drawn more specific comparisons from it.

I could have also furthered this investigation by adding another variable, such as favourite sport. I would have drawn up hypothesis that people that are taller and heavier are more likely to enjoy physical sports; where as smaller people would be more prone to enjoying racket and non-contact sports. It would have made the investigation more interesting trying to draw conclusions to these extra variables.

This further investigation would allow me to draw up more concrete views about my chosen variables, as well as giving me the chance to make more interesting contrasting comparisons.

Maths Coursework

Comparing age, height, weight and gender.

By Bill Hewitt

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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