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An IERI – International Educational Research Institute Journal

Table 2 Power of the item-fit residuals for LTT math age 9 simulations

From: Assessment of fit of item response theory models used in large-scale educational survey assessments

Item type

Mean (−3 to 3)

Mean (−2 to 2)

Bad item 1

74

84

Bad item 2

96

94

Bad item 3

86

90

Bad item 4

52

68