Which of the following is not true about standard deviation? A) Standard deviati

Question

Which of the following is not true about standard deviation?

A) Standard deviation is always non-negative

B) Standard deviation measure the typical distance between values in a data set and the mean value.

C) If the units for the data are in inches, standard deviation is in square inches.

D) Standard deviation is very sensitive to outliers.

E) Adding a value to the data set that is equal to the mean will decrease the standard deviation.

A) Standard deviation is always non-negative

B) Standard deviation measure the typical distance between values in a data set and the mean value.

C) If the units for the data are in inches, standard deviation is in square inches.

D) Standard deviation is very sensitive to outliers.

E) Adding a value to the data set that is equal to the mean will decrease the standard deviation.

Explanation / Answer

Option-A) is always true

Option-B) is always true

Option-C) is false. Because unit of standard deviation will be inches.

Option-D) is true

Option-E) is true.

So, Option-C) is the correct answer

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