Table 5 Variability to each interaction elements (MFRM)

Source of Variation Variance Component % of Variability
Variance explained by Rasch measures .23 37.70
Variance of residuals .38 62.30
Variance explained by bias / interactions pi .16 26.23
pr .02 3.28
pc .02 3.28
ir .01 1.64
ic .02 3.28
rc .01 1.64
pir .04 6.56
pic .04 6.56
prc .01 1.64
irc .01 1.64
Variance remaining in residuals .04 6.56
Raw-score variance of observations .61 100.00