Use the range rule of thumb to approximate the standard deviation.

Question

Use the range rule of thumb to approximate the standard deviation.
2, 6, 15, 9, 11, 22, 1, 4, 8, 19

A) 2

B) 6.8

C) 5.25

D) 6.3

Answer 1

Formula is (maximum-minimum)/4

 

So(22-1)/4=5.25

 

C)