A test contains items scored only as correct or incorrect. Which reliability measure is particularly appropriate?
KR-20 is appropriate for right/wrong items.
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KR-20 is appropriate for right/wrong items.
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A hypothesis is a testable assumption.
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A simple hypothesis has one IV and one DV.
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A predicted direction makes it directional.
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No predicted direction means non-directional.
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Consistency does not guarantee validity.
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Reliability concerns consistency and stability.
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Test-retest reliability repeats the same test over time.
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Stable traits are suitable for test-retest reliability.
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Parallel forms use two equivalent test versions.
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Split-half reliability divides one test into halves.
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Parallel forms use two versions; split-half uses one test divided.
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Interrater reliability concerns agreement among raters.
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Criterion validity uses an external benchmark.
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Reliability concerns consistency.
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Internal validity concerns the soundness of the study.
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External validity concerns generalizability.
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Concurrent validity compares a new test with an established one.
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Content validity concerns coverage of the domain.
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Face validity is superficial appearance of measuring the construct.
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Construct validity concerns measuring the theoretical construct.
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Controlled variables are deliberately held constant.
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Confounding occurs when an extraneous variable is linked to the independent variable.
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Parental support may confound the teaching method effect.
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Educational level is categorical.
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