[Answer] Which is true of item-characteristic curves?

Answer: They may be used as an aid in assessing whether or not items are biased

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Which is true of item-characteristic curves? item characteristic curve. The relationship between the probability of a correct . 0.9 response on a true/false item and the underlying dimension can be assumed to take the form of a cumulative normal distribution. features of an item characteristic curve. 50% = … Item characteristic curves have essentially three different shapes corresponding to three different formulations about how items combine into a scale. Spanning items have characteristic curves that essentially are straight lines stretching across the range of entity variation . A spanning item's line may start as a low probability value and rise to a high probability value or fall from a high value to a … In item response theory an item characteristic curve describes the relationship between a latent ability and the performance on a test item . This Demonstration plots the item characteristic curves of two items. Change the item parameters to see the effect of different values. Contributed by: Vincent Kieftenbeld (March 2011) The item characteristic curve of such an item is a vertical line at some point along the ability scale . Figure 1-4 shows such an item. To the left of the vertical line at θ= 1.5 the probability of correct response is zero; to the right of the line the probability of correct response is 1. Which is true of item-characteristic curves ? a. They determine which items are fair. b. They may be used as an aid in assessing whether or not items are biased. c. They determine which items are most reliable under specified conditions. d. The application of item characteristic curve (ICC) in test items selection gives a graphical property of the tes...

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