When estimating a standard deviation,researchers may rely on prior knowledge of the population(previous study),a pilot study,or:
A)Divide the range by 1,000.
B)Divide the range by a random number.
C)Divide the range by 8.
D)Divide the range by 6.

Question

Quizplus · Accepted Answer

Dividing the range by 6 is a common method used to estimate the standard deviation when only the range is known, based on the assumption of a normal distribution.

When Estimating a Standard Deviation,researchers May Rely on Prior Knowledge