By how much the mean has changed?
In the video, I have noticed the stdev has changed by 70, but the mean I couldn't get it!
1 answers ( 0 marked as helpful)
controlling for the mean, still = 743
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Resolved: Why is the formula for sample variation has n-1 in denominator instead of n?
Is it a must that the population sample has to be normally distributed to work with student T dist?