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Table 11 Effect size by research method

From: A meta-analysis on educational technology in English language teaching

Research method Model N Effect size Std. deviation Sig Result
T-test Fixed effects 9 0.913 0.461 0.002 Significant
Random effects 0.726 0.589 0.012 Significant
Pre- and post-tests Fixed effects 34 0.631 0.818 0.001 Significant
Random effects 0.794 0.756 0.001 Significant
Frequency and percentage Fixed effects 2 0.591 0.471 0.023 Significant
Random effects 1.08 0.708 0.000 Significant
Correlation Fixed effects 7 3.021 0.653 0.000 Significant
Random effects 2.86 1.053 0.000 Significant
Chi-square Fixed effects 2 2.63 1.084 0.000 Significant
Random effects 3.32 0.844 0.031 Significant
Regression Fixed effects 2 1.38 0.891 0.03 Significant
Random effects 1.26 1.124 0.000 Significant
Qualitative Fixed effects 3 0.961 1.132 0.002 Not Significant
Random effects 0.015 1.093 0.11 Significant
ANOVA Fixed effects 1 0.91 0.937 0.004 Significant
Random effects 0.962 0.932 0.002 Significant