The most common descriptive statistic used in causal-comparative research as a measure of spread around the mean is the
A) range.
B) standard deviation.
C) mean.
D) t test.

Question

Quizplus · Accepted Answer

The standard deviation is the most common descriptive statistic used in causal-comparative research as a measure of spread around the mean. It is a measure of how much individual scores vary from the mean of the sample. The range is not as precise as the standard deviation because it only considers the difference between the highest and lowest scores. The mean is a measure of central tendency, not a measure of spread, and t-tests are statistical tests used for hypothesis testing, not for describing the spread of scores.

The Most Common Descriptive Statistic Used in Causal-Comparative Research as a Measure