【摘 要】
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The Mantel-Haenszel(MH) procedure is a widely used nonparametric statistical method to measure the amount of DIF present in an item.For operational programs at ETS,at least 200 members are required fo
【机 构】
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College Board,USA
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The Mantel-Haenszel(MH) procedure is a widely used nonparametric statistical method to measure the amount of DIF present in an item.For operational programs at ETS,at least 200 members are required for the smaller group and at least 500 in total are needed at the test assembly or pilot testing phase.
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