Which of the following is a possible value for the standard deviation of a normal distribution?
A)-∞
B)0
C)-2
D).5

Question

Quizplus · Accepted Answer

The standard deviation of a normal distribution cannot be negative or zero, so options A and B can be eliminated. Option C is also unlikely as a standard deviation of -2 would mean that most of the data points fall within -4 and +4 standard deviations, which is highly improbable. Therefore, the only possible value is .5.

Which of the Following Is a Possible Value for the Standard