Which of the following is the property of standard deviation? Check all that apply. O If all values of a data set are the same, the standard deviation is zero O Standard deviation is sensitive to outliers. A single outlier can raise the standard deviation and in turn, distort the picture of spread O Standard deviation is never negative O Standard deviation is used to measure dispersion around the mean of a data set

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A: .

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A: Given, n(A ∪ B) = 97 and n(A) = n(B) = 66

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