If a treatment group has a mean score of 4 on an ordinal level scale measuring degree of emotional distress, and a control group has a mean score of 8 on that scale, then the control group on average has exactly twice as much actual emotional distress as the treatment group.

Question

Quizplus · Accepted Answer

On an ordinal level scale, the difference between scores may not necessarily represent the same difference in actual emotional distress experienced by individuals. Therefore, we can't conclude that the control group has exactly twice as much actual emotional distress as the treatment group just based on the mean scores.

If a Treatment Group Has a Mean Score of 4