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Determine the mean and variance for these data values: $5,\,-2,\,12,\,7,\,-3,\,2,\,-6,\,4,\,0,\,8$.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
Determine the mean and variance for the data given below.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Finding the mean from $\frac{5 + (-2) + 12 + 7 + (-3) + 2 + (-6) + 4 + 0 + 8}{10}$, or an equivalent method” …
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