A Power Test

question 4

Multiple Choice

A power test:

• A)is a type of typical response test.
• B)requires a stringent time limit.
• C)emphasizes the use of items of similar difficulty.
• D)can focus on aptitude or achievement.

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Definitions:

Statistic

A single measure, reported as a number, used to summarize a sample of data.

Central Tendency

A measure that identifies the center of a data set, or where the bulk of the values lie, including mean, median, and mode.

Statistic

A statistic is a single measure, reported as a number, used to summarize a sample and to estimate the corresponding value in the larger population from which the sample was drawn.

Parameter

A parameter is a numerical characteristic of a population, such as its mean or standard deviation, as opposed to a statistic of a sample.