The index of the amount of variability in a set of data is known as the
A) mean.
B) standard deviation.
C) median.
D) frequency distribution.

Question

Quizplus · Accepted Answer

The index of variability in a set of data is best measured by the standard deviation. The mean refers to the average value of the data, the median refers to the middle value of the data set, and a frequency distribution provides a count of how often each value appears in the data. However, the standard deviation provides a measure of how spread out the data is around the mean, making it a more appropriate choice for measuring variability.

The Index of the Amount of Variability in a Set