Correlation Coefficient and Line of Best Fit by Tom Healy
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AP Statistics
This example demonstrates calculating the correlation coefficient by moving points and displaying the line of best fit with its equation. Core math concepts include correlation, linear regression, and best fit line. Constructed using GeoGebra commands PMCC and FitLineY with objects F, E, D, C, B, A, list1, r, text1, a, b. Suitable for high school mathematics teaching on data distribution and regression analysis.
GeoGebra Commands & Parameters
PMCC(list1) → rFitLineY(list1) → a
AI Drawing Prompt Reference
Draw a set of points and observe the correlation between them by moving the points. Display the line of best fit and its equation. Calculate the correlation coefficient and observe changes in the slope and y-intercept.
The prompt above was compiled from the original drawing commands and is for reference only.