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I am going to use secondary data for my investigation. I have acquired my data from the website www.mathsmatrix.co.uk. The data is based on a real school but the name of the students and the school has been changed. The data is presented as a single list of 1183 pupils, from year 7 to year 11. I have chosen to investigate two lines of inquiry. The relation ship between height and weight and the relationship between IQ and KS2 math's results. I will choose a sample of thirty boys and thirty girls randomly. This can be done using a number of methods. I have used the random number button on my calculator. HEIGHT AND WEIGHT Below I have shown the sample of the thirty boys and girls that I have chosen. Girls Boys Height (m) Weight (kg) Height (m) Weight (kg) 136 44 132 38 142 52 149 67 152 33 150 55 152 55 153 40 154 45 154 42 156 50 154 54 156 53 155 38 156 63 155 43 156 74 155 47 157 45 155 47 157 52 155 64 157 53 155 64 158 40 160 55 158 48 162 48 158 55 162 49 160 42 162 50 160 54 165 46 161 54 165 50 162 42 165 54 162 65 166 43 163 45 166 54 163 48 168 63 165 52 173 50 170 48 174 64 170 50 177 57 172 45 178 67 172 50 180 68 175 53 180 77 175 72 182 75 178 59 183 75 Next I represented this data in the form of a frequency table with boys and girls separately GIRLS Height,...

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