A researcher is studying the amount of sleep university students get each night. She notices that there is a lot of variability in the data, with some students typically sleeping for around eight hours a night and some sleeping around five hours a night. One way to measure how spread out the data scores are is to use:

Question

Quizplus · Accepted Answer

The standard deviation measures the amount of variability or spread in the data scores. It is a more comprehensive measure of variability than the arithmetic mean, which only gives information about the central tendency of the data. Meta-analysis and inferential statistics are not measures of variability, but rather methods of analyzing and synthesizing data.

A Researcher Is Studying the Amount of Sleep University Students