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Calculate the variance version of standard error for each sample in Exercise 10.18—for the liberals (2, 1, 3, 2) and then for the conservatives (4, 3, 3, 5, 2, 4).

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    Steps to calculate the variance version of standard error:

    1. Square the standard error.

    2. Multiply the square of the standard error by the sample size.

    The result should be the variance of the sample.

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