If the Standard Deviation of a Data Set Is 0

question 42

Multiple Choice

If the standard deviation of a data set is 0,

• A)the data set is symmetric, and the negative values cancelled out the positive values.
• B)the mean of the data set must also be 0.
• C)a calculation error must have been made, as the standard deviation cannot be 0 when the data set has positive values.
• D)all of the observations in the data set must be the same.
• E)none of the above.