Asked by jake
Suppose x is a random variable with mean and standard deviation. If a large number of trials is observed, at least what percentage of these values is expected to lie beween mean-2(standard deviation) and mean + 2(standard deviation)
could someone help me i'm so lost? thank you sooooo much!!!
could someone help me i'm so lost? thank you sooooo much!!!
Answers
Answered by
bobpursley
Memorize it. Two standard deviations contain 95 percent of the population.
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