The formula for the standard deviation used in this chapter is A)SD² B)SD C)√SD² D)Σ(X−M)²

Question

Quizplus · Accepted Answer

The correct formula for standard deviation is the square root of the variance, and the variance formula is Σ(X−M)²/N, where Σ represents the sum, X is the data value, M is the mean, and N is the sample size. Therefore, the formula for standard deviation is √[Σ(X−M)²/N]. Choice C is the only option that correctly represents this formula.

The Formula for the Standard Deviation Used in This Chapter