Using Studies Wisely

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Statistics

Collecting Data

AP Statistics

Unit 3: Collecting Data

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4 Terms

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Sampling variability

refers to the fact that different random samples of the same size from the same population produce different estimates

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Statistically Significant

when the observed results of a study are too unusual to be explained by chance along

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Scope of Inference

Random selection of individuals allows inference about the population from which the individuals were chosen; random assignment of individuals to groups allows inference about cause and effect

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