What calculation gives a researcher a good idea of how spread out a series of numbers is?
A) mean
B) median
C) mode
D) standard deviation
E) correlation coefficient

Question

Quizplus · Accepted Answer

Standard deviation is a statistical measurement of the amount of variability or dispersion in a set of data values. It gives a good idea of how spread out the data is from the mean. Mean, median, mode, and correlation coefficient provide different insights into the data but do not measure dispersion.

What Calculation Gives a Researcher a Good Idea of How