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Here are data about the number of classes missed and the corresponding score on the final exam for..

/in /by

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Here are data about the number of classes missed and the
corresponding score on the final exam for 120 students in a statistics class
(see exerciseskipping-class.txt):

1. Plot the scatter of the data.

2. Add to the plot points that show the mean score for those
who missed one class, two classes, three and four.

3. Add to the plot the regression line.

4. On the average, how many points can a student expect to
lose from the score on the final exam?

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