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A firm's short-run demand curve for labor is
Internal Validity
Refers to how well an experiment is conducted and whether it measures what it's supposed to measure, without being confounded by other factors.
Independent Variable
A variable in an experiment that is manipulated to observe its effects on a dependent variable.
Internal Validity
The extent to which a study provides evidence that a causal relationship exists between the variables it examines, free from confounding factors.
Random Assignment
Use of a random "chance" procedure (such as a random number generator or coin toss) to determine the condition in which an individual will participate.
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