A Researcher Wants to Determine If a Test Is Reliable

question 104

Multiple Choice

A researcher wants to determine if a test is reliable in terms of its internal consistency.Which approach would be most appropriate to take?

• A)giving the same people the same test on two different occasions.
• B)administering alternate parallel forms of exactly the same test twice.
• C)comparing performance on odd- and even-numbered items.
• D)training individuals carefully before allowing them to administer the test.

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Definitions:

Percentile Rank

A score that indicates the percentage of scores in its frequency distribution that are equal to or below it.

Z-Scores

Statistical measures that indicate how many standard deviations an element is from the mean of a distribution.

Norm Group

A representative sample of the population by which test scores are interpreted and compared.

Normally Distributed Curve

A graphical representation of a distribution of data in which most values cluster around a central peak and taper off symmetrically towards either end, resembling a bell shape.