Curriculum
Statistics — Third Secondary
Unit 1: Correlation and Regression
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Unit 2: Advanced Statistical Measures
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Unit 3: Probability
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Unit 4: Random Variables
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Unit 5: The Normal Distribution
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Text lesson
Regression
Regression
The link between regression and correlation
The link between regression and correlation
- The slope can also be written in terms of the correlation coefficient and the standard deviations: b = r × (sy ÷ sx), where sx and sy are the standard deviations of x and y.
- This shows that the slope depends on the strength of the correlation and on the units used to measure the data.
- If r = 0, the slope equals zero. The regression line is then horizontal, and x cannot help us predict y.
Regression · 4 / 7