Simple Lineair Regression
8 important questions on Simple Lineair Regression
What does correlation (r) measure?
What is the range of correlation (r)?
- r = +1 → perfect positive linear relationship
- r = –1 → perfect negative linear relationship
- r = 0 → no linear relationship
What is the formula for correlation?
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The Regression Equation - What is the formula for the regression line?
The Regression Equation - What does b₀ represent?
(Where the line crosses the Y-axis.)
The Regression Equation - What does b₁ represent?
→ e.g. if b₁ = 2, every +1 in X increases Y by 2 on average.
Formulas for Slope and Intercept - What is the formula for b₁ (slope)?
What is the formula for b₀ (intercept)?
The question on the page originate from the summary of the following study material:
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