Question

Hideo is calculating the standard deviation of a data set that has 7 values. He determines that the sum of the squared deviations is 103.

What is the standard deviation of the data set?


Round the answer to the nearest tenth.

Enter your answer in the box.

Answer 1

4.1 is the answer, hope this helps :)

Answer 2

We can compute for the answer by dividing the sum of the squared deviations 103 by n-1 = 7-1 = 6. Then we take the square root of the quotient.

The standard deviation is √(103/6) = 4.143.

Rounding off to the nearest tenth we have 4.1.