Mathematics (AS & A Level) · Feb / March 2019 · Paper 62 · Question 2
9709
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The question as text
For 40 values of the variable x, it is given that Σx −c 2 = 3099.2, where c is a constant. The standard deviation of these values of x is 3.2.
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2(i)[3]
2(ii)[1]
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