Question

If the mean of a given dataset is

7 and the standard deviation is
2, where will a majority of the
data lie?
A. 1 to 2
B. 9 to 10
C. 5 to 9

Answer 1

C

Explanation:

about 68% of the data lies within one standard deviation of the mean. That is, between

so 7 + 2 = 9

7 - 2 = 5

so answer C is the most appropriate being 5 to 9