Research and Practice in Technology Enhanced Learning

Table 7 Item difficulty means values

From: Controlling item difficulty for automatic vocabulary question generation

		DWD.low	DWD.high	Row mean
RPD.low	SIM.low	.590	.557	.573
	SIM.high	.559	.392	.475
	Mean	.574	.474	.524
RPD.high	SIM.low	.583	.490	.536
	SIM.high	.571	.388	.479
	Mean	.577	.439	.507
	Column Mean	.575	.456

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