The sample standard deviation of differences sd is equal to the difference of the sample standard deviations $s _ { 1 } - s _ { 2 }$

Name: The sample standard deviation of differences sd is equal to the difference of the sample standard deviations $s _ { 1 } - s _ { 2 }$
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Quizplus · Accepted Answer

The sample standard deviation of differences is not simply the difference of the sample standard deviations; it involves the square root of the sum of the variances (squared standard deviations) of the two samples.

The Sample Standard Deviation of Differences Sd Is Equal to the Difference