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Goals of this lesson:

1)  Create scatterplots:

            plot()

2) Generate linear regression result:

            lm()

3) Draw a least-squares regression equation on your scatterplot:

           abline()

 

Instructions

• Watch the following video:

R5 Linear Regression

 

• For the details on the “pch” argument, see the link:

http://www.sthda.com/english/wiki/r-plot-pch-symbols-the-different-point-shapes-available-in-r

 

• Practice #4.5 on p97 (from the Check Your Skills Section in your book). Use the data in the question to generate:
  • • • a scatterplot with a least-square regression line

Here are the results:

coral_reefs_screenshot_1

coral_reefs_screenshot_2

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