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Table 8 Summary of Wilcoxon rank-sum test for significant differences between-groups (W, p value, and effect size)

From: Increasing high school teachers self-efficacy for integrated STEM instruction through a collaborative community of practice

Group control

Experimental vs. control

Score difference

 

Science & ETE teachers

Science teachers

ETE teachers

Pretest/Posttest

W

348

98.5

77

p value

.04823

.03291

.2942

Effect size

.2889

.4593

.1407

Posttest/ Delayed

W

328

99.5

62.5

p value

.1096

.02945

.6292

Effect size

.2148

.4741

.07407

Pretest/ Delayed

W

356

111

68.5

p value

.03404

.005058

.4881

Effect size

.3185

.6444

.01481