AP Statistics

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  • 1. Linear Regression & Correlation Worksheet
  • 2. Correlation Experimentation
  • 3. Correlation coefficient and line of best fit
  • 4. Scatter Slider : Correlation & Line of Best Fit
  • 5. CCGPS CA 4.3.2 Example 1
  • 6. Correlation
  • 7. CCGPS CA 4.3.2 Example 3
  • 8. Match the Least Squares Regression Line
  • 9. Least Squares

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Linear Regression & Correlation Worksheet

Explore linear modeling of (x, y) data by moving the data points up and down. You'll see how the correlation coefficient r describes the linearity of the data, and how the least-squares regression line fits the data. The point indicating the mean of the x-coordinates ("x-bar") and the mean of the y-coordinates ("y-bar") is shown. (Points are constrained to move up and down only.)
Move the points so the slope of the least-squares line is negative. What happens to the sign on the correlation coefficient?[br]Adjust the points so they fall in a line. What is the correlation coefficient?[br]Does the point (x-bar, y-bar) ever come off of the least-squares line?
– Ann Defranco

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