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For normally distributed variables, approximately what percentage of values fall within two standard deviations of the mean?

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For normally distributed variables, approximately what percentage of values fall within two standard deviations of the mean?

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Step 1

Given a normally distributed variable X. Let us assume its mean is µ and standard deviation σ.

According to empirical rule we can say that 68% of data lie with in one standard de...

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Math

Probability

Random Variables

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