The variance is a measure of dispersion or variability of a random variable. It is a weighted average of the
A)square root of the deviations from the mean
B)square root of the deviations from the median
C)squared deviations from the median
D)squared deviations from the mean

Question

Quizplus · Accepted Answer

The variance is calculated by taking the squared deviations of each data point from the mean, summing them up, and dividing by the total number of data points. This gives us an idea of how spread out the data is from the average value. Therefore, the correct option is D, squared deviations from the mean.

The Variance Is a Measure of Dispersion or Variability of a Random