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7 Cards in this Set
- Front
- Back
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Response Variable |
Dependent variable |
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Explanatory Variable |
Independent variable |
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Analyzing Scatterplots |
Look for: - Form (linear, curved, etc) - Strength (amount of scatter) - Direction (positive or negative) |
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Correlation |
Tell direction and strength of linear relationship between two quantitative variables Unaffected by roles explanatory/response Unaffected by change in units |
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Least-Squares Regression Line |
Distinction between explanatory and response is important |
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Coefficient of Determination |
square of the correlation (r squared) |
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Extrapolation |
Using the regression line to predict responses for explanatory values outside the range of those used to construct the line AVOID |
