Question

What is the approximate standard deviation of this data set?

5, 3, 2, 1, 9, 10, 12, 8
6.25
4.06
O 12
O 9.5

Answer 1

The answer is 4.06

Explanation:

mean = 6.25

N = 8

Mean square

(5−6.25)² ≈1.56

(3-6.25)² ≈ 10.56

(2-6.25)² = 17.56

..,..

Sum of mean square= 114.5

√41.31 = 3.78 ≈ 4.00