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Table 3 Descriptive statistics of latent trait estimates from the Rasch model across four test forms

From: A structural equation modeling approach for examining position effects in large-scale assessments

Form N M SD Min Max
1 2975 −.01 1.02 −3.17 2.06
2 2901 .01 1.04 −2.75 2.06
3 2897 .00 1.01 −2.75 2.06
4 2961 −.01 1.04 −3.02 2.06