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Table 8 Overall effect size of gender differences in “Valuing Mathematics” for eighth graders

From: Gender, affect, and math: a cross-national meta-analysis of Trends in International Mathematics and Science Study 2015 outcomes

 KESSEτ2Test of null95% CITest of homogeneity
8th Grade
 Fixed40− 0.0730.004 − 16.870.000− 0.07− 0.051295.5390.000
 Random40− 0.0660.0220.02− 3.540.000− 0.12− 0.03