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An IERI – International Educational Research Institute Journal

Table 3 Correlations between the different HRL indices and mathematics achievement of fourth-grade students (average values across countries)

From: Assuming measurement invariance of background indicators in international comparative educational achievement studies: a challenge for the interpretation of achievement differences

Variable

M1

M2

M3

M4

MAT

RP

0.99

0.99

1.00

0.97

0.41

M1

 

1.00

0.99

0.95

0.40

M2

  

0.99

0.95

0.40

M3

   

0.97

0.41

M4

    

0.40

  1. RP, HRL index replicating the scaling model from Martin et al. (2013); M1, HRL index using scaling model 1; M2, HRL index using scaling model 2; M3, HRL index using scaling model 3; M4, HRL index using scaling model 4; MAT, mathematics achievement of fourth graders