Question

GIVING MEDAL.
What is the standard deviation of the following data set. Round to the nearest tenth.
11, 5, 12, 8, 5, 12, 10
A. 3.1
B. 9
C. 2.9
D. 8

Answer 1

A.3.1

Answer 2

(11+5+12+8+5+12+10)/7=9

Answer 3

so is it A or B?

Answer 4

I am not done explaining but look at my first response:)

Answer 5

Then calculate the difference from the mean for each point

Answer 6

(3^2+4^2+3^2+1^2+3^2+1^2)/7=9.33333 This is the variance

Answer 7

Standard deviation is the square root of the variance so (sqrt)9.33333=3.055

Answer 8

ok thank you