The effect size is:

Question

The effect size is:

Quizplus · Accepted Answer

The effect size is the amount of gain between pretest and posttest scores measured in standard deviations. It is an important statistical measure that allows us to compare the magnitude of change between different interventions, even if they use different outcome measures. It helps to estimate the practical significance of an intervention, as opposed to statistical significance. A and B are not correct because the effect size is a measure of change, not of attitudes or funding allocations. Mean difference is simply the average difference between pretest and posttest scores and does not take into account the variability of the data.

The Effect Size Is