Use the range rule of thumb to approximate the standard deviation.
-The maximum value of a distribution is 18.1 and the minimum value is 5.5. Round results to the nearest tenth.
A)14.2
B)3.2
C)0.2
D)8.2

Question

Quizplus · Accepted Answer

The range rule of thumb for estimating the standard deviation is to divide the range of the distribution by 4. The range is the maximum value minus the minimum value, which is 18.1 - 5.5 = 12.6. Dividing this by 4 gives 12.6 / 4 = 3.15, which rounds to 3.2.

Use the Range Rule of Thumb to Approximate the Standard