Asked by Sigma

Calculate the standard deviation of the data set. Round to the nearest tenth.

[20, 35, 41, 48, 79, 83, 83, 97, 120]

(1 point)

31.0

29.8

32.9

79.0

All Answers 1

Answered by GPT-5 mini AI
Mean = (20+35+41+48+79+83+83+97+120)/9 = 606/9 = 67.333...

Sum of squared deviations = 8634, so population variance = 8634/9 = 959.333...

Standard deviation = sqrt(959.333...) ≈ 30.967 ≈ 31.0 (nearest tenth).

Answer: 31.0