Lesson 2.2.5:
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For this lesson there are 15 steps for you to take. Scroll down and do each step one-by-one. The instructions under each step will help clarify exactly what you need to do, so please read all the instructions.
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1.) Start Notes: Targets
Title your notes and write the targets listed below.
Title your notes and write the targets listed below.
- I can use technology to find the value of the correlation coefficient for a given data set.
- I can use the correlation coefficient to measure the strength and direction of a linear relationship.
3.) Video: Warm Up
Watch this video to see how I think through exercises 1-4 from the warm up. |
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4.) Notes: Practice 1
The warm up talked about how scatter plots can have positive or negative linear relationships. In Practice 1 we will discover that linear relationships have different degrees of strength. 1.) Sketch the two scatter plots into your notes. 2.) Use what you learned from the warm up to answer exercises 5 - 7. 3.) Make up your own scatter plot for part 8 and 9. |
5.) Video: Practice 1
Watch this video to see how I worked through Practice 1. |
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7.) Video: Practice 2
Watch this video to get some insight about what makes a scatter plot have a strong or weak linear relationship. |
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8.) Investigate: Correlation Coefficient
Now we introduce the "Correlation Coefficient." 1.) Write down the definition for correlation coefficient. 2.) Look through all the scatter plots to try to discover what the correlation coefficient measures. Try to find the pattern. If you want, you can copy the scatter plots and their correlation coefficients. |
10.) Video: Practice 3
Watch this video to see how I answered questions 13-15. I also introduce the rules to the correlation coefficient, so watch the whole thing. |
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14.) Video: Practice 4
Watch this video to see how I worked through Practice 4. |
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