Question: 2.143 Range and standard deviation approximation Use the empirical rule to explain why the standard deviation of a bell-shaped distribution for a large data set

2.143 Range and standard deviation approximation Use the empirical rule to explain why the standard deviation of a bell-shaped distribution for a large data set is often roughly related to the range by evaluating Range ≈ 6s. (For small data sets, one may not get any extremely large or small observations, and the range may be smaller, for instance about 4 standard deviations.)

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