The _____ describes the spread or variability of the sample distribution values from the mean, and is perhaps the most valuable index of dispersion.
A) range
B) variance
C) standard deviation
D) skewness
E) kurtosis

Question

Quizplus · Accepted Answer

Standard deviation is the most valuable index of dispersion as it takes into account all the values in the sample distribution and provides a measure of how much they deviate from the mean. The range only indicates the difference between the highest and lowest values, while variance and skewness do not take into account the spread of values around the mean. Kurtosis measures the shape of the distribution, not its spread or variability.

The _____ Describes the Spread or Variability of the Sample