TABLE 5.
Effect Size by Type of Research Design
Research design
Effect size
Experiment
Quasi-experiment
Prepost
Grand total
Experiment
Quasi-experiment
Prepost
Low
6
3
3
12
50.00%
25.00%
25.00%
Medium
5
5
4
14
41.67%
41.67%
33.33%
High
1
4
5
10
8.33%
33.33%
41.67%
Grand total
12
12
12
36