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Select all of the true statements about the standard deviation of a quantitative variable Standard...

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Select all of the true statements about the standard deviation of a quantitative variable Standard deviation is resistive to unusual values The standard deviation of a group of values is a measure of how far the values are from the mean Changing the units of a set of values e g converting from inches to feet does not affect its standard deviation Standard deviation is always a nonnegative value If a set of values has a mean of 0 and a standard deviation that is not 0 then adding a new data point with a value of 0 will have no effect on the standard deviation The standard deviation of a set of values is equal to 0 if and only if all of the values are the same

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