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This Interpreting Correlation lesson plan also includes:
Is 0.56 stronger than -0.78? Interpret the correlation coefficient as the strength and direction of a linear relationship between two variables. An algebra instructional activity introduces the correlation coefficient by estimating and then calculating it.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Provide additional scatter plots to use to estimate the correlation coefficient, and then compare to actual correlation coefficient
Classroom Considerations
- Be careful to point out that the slope of the line is not the same as the correlation coefficient, but that it does have the same sign
- Stress that just because the scatter plot may have a perfect correlation coefficient, it does not mean causation
- Lesson 19 of a 20-lesson module
Pros
- Several scatter plots provided for estimation of correlation coefficients
- Teacher notes provided for key concepts that may lead to misconceptions, such as a correlation coefficient that is positive has a strong correlation than one that is negative
- The examples, practice problems, and exit ticket provide many opportunities to estimate and calculate the correlation coefficient in order to determine the strength of the linear relationships
Cons
- None