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Question

Compute the mean and standard deviation for the following sample of $n=5$ scores: $70,72,71,80$, and 72. Hint: To simplify the arithmetic, you can subtract 70 points from each score to obtain a new sample. Then, compute the mean and standard deviation for the new sample. Finally, make the correction for having added 70 points to each score to find the mean and standard deviation for the original sample.

Solution

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Answered 1 year ago

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1 of 7We are given a set of scores whose $n=5$. In order to obtain the mean and standard deviation, we'll simplify the arithmetic so that we subtract $70$ points from each score.

Then we'll calculate the mean and standard deviation, and at last, note the mean and standard deviation for the original sample.

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