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Fig. 8 | Research and Practice in Technology Enhanced Learning

Fig. 8

From: Big data management skills: accurate measurement

Fig. 8

QUEST fit map (McKay 2000a p.222). This figure shows the fit statistics (listed horizontally .56 to 1.40 is the infit mean square); the asterisks represent the magnitude of the fit statistic for the test-item on the same line. The test-items that fall between the two vertical dotted lines (thresholds .77 to 1.30) are considered acceptable; test-items to the left overfit (see test-item 34), indicating duplication or having limited contribution. Underfit test-items to the right of the threshold lines, measure something else and need rewording

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