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Lesson Plan: Pearson’s Correlation Coefficient Statistics • Third Year of Secondary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate and use Pearson’s correlation coefficient, 𝑟, to describe the strength and direction of a linear relationship.
Objectives
Students will be able to
- calculate Pearson’s correlation coefficient for bivariate data by hand and using a graphic display calculator,
- use the correlation coefficient to describe how two variables correlate with one another,
- estimate the correlation coefficient from the scatter diagram of bivariate data.
Prerequisites
Students should already be familiar with
- whether two variables have linear correlation based on a scatter diagram of bivariate data,
- the notions of positive and negative correlation based on a scatter diagram of bivariate data,
- the strength of correlation based on a scatter diagram of bivariate data,
- one-variable statistics, including variation, mean, and standard deviation.
Exclusions
Students will not cover
- proof of Pearson’s correlation coefficient,
- finding the equation of the line of best fit.
