If a researcher believes that participants in a single group will score differently from one another on a task, the researcher can find out if that is true by looking at the
A)mean.
B)median.
C)correlation coefficient.
D)standard deviation.

Question

Quizplus · Accepted Answer

The standard deviation measures the variability or spread of scores within a group, so if the researcher suspects that participants in a single group will score differently from one another, the standard deviation can indicate whether this is true. The mean and median both measure central tendency and would not necessarily indicate differences in scores between participants. The correlation coefficient measures the relationship between two variables and would not be appropriate in this situation of analyzing scores within a single group.

If a Researcher Believes That Participants in a Single Group