The Item Characteristic Curve Can Provide a Picture of an Item's

question 28

Multiple Choice

The item characteristic curve can provide a picture of an item's ______.

• A) distribution of responses
• B) interitem and item-total correlation
• C) level of difficulty and discrimination
• D) reliability and validity

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Definitions:

Negatively Correlated

Describes two variables that move in opposite directions; as one increases, the other tends to decrease.

Variance

A measure of the dispersion of a set of data points around their mean value, indicating how spread out the data points are.

Portfolio

A collection of investments held by an individual or an institution.

Expected Rate

A predicted rate of return or outcome based on certain assumptions or historical data.