Which term means the extent to which a measurement tool consistently measures a variable?
1. Stability.
2. Equivalence.
3. Internal consistency.
4. Precision.
3
Rationale 1: Stability of an instrument refers to its consistency over time.
Rationale 2: Equivalence relates to the degree of consistency between two different forms of the same instrument.
Rationale 3: Internal consistency (homogeneity) examines the extent to which all items on an instrument measure the same variable.
Rationale 4: Precision refers to the accuracy with which an instrument measures a variable.
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