Question

In a distribution the mean is 55 and the standard deviation is 12. The z score corresponding to a point one standard deviation below the mean would equal?

Answer 1

Given that a distribution the mean is = 55 and the standard deviation is = 12, the Z score value is defined as the standard score of the values in the distribution which is actually the number of standard deviations below or above the mean.

Here as the mean is 55 and the standard deviation is 12 hence the score that is 67 is actually (67-55)/12 = 1 standard deviation above the mean.

So, The Z score corresponding to a point one standard deviation below the mean would equal to -1.

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