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Table 6 Summary of statistical tests for significant differences for the experimental group (V, p value and effect size)

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

Test comparison

 

Pretest/posttest

Posttest/delayed

Pretest/delayed

Science & ETE teachers (n = 30)

V

215.5

304.5

266.5

p value

.1569

.03028

.03194

Effect size

.2279

.4000

.4101

Science teachers (n = 15)

V

74

90

88.5

p value

.09239

.009944

.001475

Effect size

.4095

.7143

.9451

ETE teachers (n = 15)

V

39

54.5

46

p value

.5158

.6341

.6703

Effect size

0

.09167

.1238

  1. Matched-pairs rank-biserial correlation r was used as an effect size for score comparison between test periods