How Do Researchers Calculate the Discrimination Index

question 16

Multiple Choice

How do researchers calculate the discrimination index?

• A) They calculate the difference between the percentage of upper performers and the percentage of lower performers who responded correctly.
• B) They calculate the percentage of test takers who answered the item correctly.
• C) They compare the percentage of test takers who answered the item correctly by demographic group.
• D) They develop a matrix that contains the results of the item analyses for each item and calculate a score by adding the matrix columns.

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Definitions:

Comprehend E-mail Messages

The process of understanding and interpreting the content and intent of an email communication.

Vastly Underestimate

To significantly underrate the size, value, importance, or capability of someone or something.

Relay

A system or process in which information, data, or objects are passed along through a series of stations or individuals until the final destination is reached.

Cluster Chain

A series of events, ideas, or objects grouped together due to their connection or relation to one another.