Which of the following is a possible value for the standard deviation of a normal distribution?
A) -$\infty$
B) 0
C) -2
D) 0.5

Question

Quizplus · Accepted Answer

The standard deviation of a normal distribution cannot be negative or infinite, which eliminates choices A and C. It can be 0, but this would result in a degenerate distribution where all values are the same. The best choice is D, where the standard deviation is a positive value that determines the spread of the distribution.

Which of the Following Is a Possible Value for the Standard