- I think y7 girls are taller than y7 boys but y11 boys taller are taller than y11 girls because year 7 girls go through puberty before boys so they will be taller but in year 11 the boys will be bigger because they have been through puberty later.
- I think growth for boys is greatest in year 9 but for girls is in year 8 because girls go through puberty before boys so they will grow before boys and boys grow later than girls so that is why boys tend to grow more in year 9 than in year 8
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 is how strong the correlation between the values
The correlation of this graph is that all the pupils are quite close together. This shows that the vast majority of the pupils are between 1. 5 metres and 1.7 meters and 30kg and 70kg
There is a stronger correlation between the year 7 pupils than the year 9 pupils because unlike the year 9’s the year 7s will not have gone through puberty so therefore they will not have gone through the growth spurt so the year 7’s will be generally the same size and weight with the few exceptions.
Limitations:
The limitations I had were that my findings would have been a lot more accurate if I had got some more information from a number of different schools all across England so that I could see if there was a particular place or area that has more people which weight a lot and another place which might not weight a lot.
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.