Does the amount of water consumed affect grades? Henry LeeProblemDoes the amount of water consumed in a day affect your grades?ConjectureThe amount of water drunk in a day positively influences your effort grades.

PopulationYear 9s in GSISSampleMr Yorkes Year 9 Maths ClassVariables measuredCups of water consumed per dayModal effort grade for term 1 report card

Table & GraphCups of water/dayModal effort grade on half term report

41

52

122

102

31

61

61

73

73

101

51

91

Conclusion/Review For this mini-project, I have chosen the matter of the effect on water consumed on a students effort in school. After conceiving the problem and conjecture, I then identified the population, sample and the values I needed to collect. After constructing a table to collect the values in, I verbally asked all the students in my maths class the number of cups of water consumed every day and their modal effort grade in their half-term reports. Looking at the scattergraph above, there is a somewhat vague correlation between the two factors. In a few cases people who generally drank more water got high effort grades, but some who also drank a lot of water got lower effort grades. The same also applies to the opposite. I can conclude that my conjecture was not necessarily correct, due to the large number of values that dont fit it.

Evaluation I feel that the process went off rather well, but there are a few things that could be changed in order to make the results much more accurate. Firstly, I could collect results from a much larger sample group. The current scattergraph seems to vaguely follow my conjecture, but still present a lot of outliers. Perhaps more results would produce a clearer, more distinct trend. Another improvement is to specify the amount of water in a more accurate way, for example in a measurement such as ml. The word cups may represent a different amount in another persons head, thus possibly giving us distorted and inaccurate results. In order to solve this problem, we should ask for a specific amount in ml.

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