By subtracting a student's pretest score from the posttest score and dividing by the standard error of the difference score, you achieve this score.
A) Cut-off point
B) Absolute change
C) Reliable change index
D) Percent of nonoverlapping data points

Question

Quizplus · Accepted Answer

The Reliable Change Index (RCI) is calculated by subtracting a student's pretest score from the posttest score and dividing by the standard error of the difference score. This score indicates the amount of change in a student's score that is beyond what could be expected due to chance or measurement error. The RCI is often used in clinical and educational settings to determine if a student's change in score is statistically significant and meaningful.

By Subtracting a Student's Pretest Score from the Posttest Score