The standard deviation of the ages of all children 9 to 11 would be______________the standard deviation of all children aged 1 to 8.
A) less than
B) greater than
C) equal to.

Question

Quizplus · Accepted Answer

The standard deviation measures the dispersion of a set of data from its mean. The ages of children 9 to 11 are closer to each other (and their mean) than the ages of children 1 to 8, which are more spread out. Therefore, the standard deviation for ages 9 to 11 would be less than for ages 1 to 8.

The Standard Deviation of the Ages of All Children 9