The Coefficient of Determination (R²) Tells You

question 79

Multiple Choice

The coefficient of determination (r²) tells you

• A) that the coefficient of correlation (r) is larger than 1.
• B) whether r has any significance.
• C) that you should not partition the total variation.
• D) the proportion of total variation that is explained.

Apply knowledge of confidence intervals to determine the impact of sample size on the precision of mean estimates.

Analyze how changes in sample size affect the variability among sample means.

Comprehend definitions and roles of population and sample standard errors in constructing confidence intervals.

Distinguish between correct and incorrect interpretations of confidence interval probabilities.

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Definitions:

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