Statements such as "Mean scores of participants in the experimental condition were twice as high as those of participants in the control condition" should only be made when the dependent measure is based on ________ level scale.
A) an ordinal
B) an interval
C) a ratio
D) either an interval or a ratio

Question

Quizplus · Accepted Answer

Statements about one score being "twice as high" as another are meaningful only when the scale of measurement is a ratio scale, because ratio scales have a true zero point, allowing for meaningful comparisons of absolute magnitudes.

Statements Such as "Mean Scores of Participants in the Experimental