Question: a) Can the standard deviation ever be 0? b) Can it ever be a negative number? c) What is the effect of a small number

a) Can the standard deviation ever be 0?

b) Can it ever be a negative number?

c) What is the effect of a small number of extreme values or “outliers” on the standard deviation?

d) The standard deviation of women’s heights in the United States is about 3 inches. How could it be that small when there are millions of women in the United States?

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a Yes if all the observations are equal b No The deviations from the mean ... View full answer

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