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comparing heights in males and females during puberty

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Introduction

English International College: ES130 Name: Archie Mustafa Skills: C2, C3. Aim: To compare the differences in height of males and females in years 7 and 11. Hypothesis: Puberty occurs in females at a younger age than in males, females consequently begin their growth spurts at an earlier age. Males start puberty at a later age, starting their growth spurts later; however males have stronger and longer growth spurts than in females. I therefore predict that females in year 7 will be taller on an average than the males; however I believe that in year 11, males will be moderately taller. Method: To gather my results to carry out my experiment I will need to collect male and female heights in years 7 and 11. The method described below, explain how each students height should be measured: * The students must remove their shoes. * Student will then need to stand on the height measure. * They will then need to ensure that they are standing upright so that their back is straight and they are staring directly ahead. ...read more.

Middle

My hypothesis stated that "females in year 7 will be taller on an average than males; however I believe that in year 11, males will be moderately taller." As you can see from my results and graphs, my hypothesis was proved partly correct. On the histogram which compares heights, year 11 males have an overall higher height value bar than that of the year 11 girls, which confirms that the males are taller in their later age of teen years. On the histogram which compares heights of year 7 males the bar is overall at a fairly similar height value than that of the year 7 females. From my results table and average height graph you can see that the average height in year 11 males was 177.30 which was 13.86cm bigger than that of the year 11 female average heights, reinforcing my hypothesis. The average height in year 7 males was 150.22cm which was 0.52cm bigger than that of the girls average heights, this was because of an experimental error. ...read more.

Conclusion

Evaluation: Overall I think I carried out the experiment fairly well. However in an ideal world there could have been a few things that I could have done to improve my experiment. I firstly could have a larger number of people to take height measurements from, for example fifty different people from each year to take measurements from, e.g. 25 females and 25 males. This would provide me with a larger range of results to focus on and analyse. There were two factors that could have had a slight effect on my results. When the year 7 males and females measured there heights they rounded there results up to 0.5 of a centimetre or they rounded down to the nearest centimetre, this would have affected the overall average. Also there were eleven year 7 male height measurements taken, which resulted in a higher average. An equal amount of height measurements should have been recorded. If I could have controlled all these variables I think I would gain a much more precise set of results. ?? ?? ?? ?? Archie Mustafa. ...read more.

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