A math teacher claims that s/he knows there is a distinct relationship between a student's math mark and the student's class attendance. To prove the point, the teacher has taken a random sample from last year's class and obtained the following information:

You should use a spreadsheet (Excel, Open Office) or Desmos.

Student	A	B	C	D	E	F	G	H
Mark	90	75	55	73	70	85	63	45
# classes missed	2	7	13	9	7	4	13	16

1. Determine the dependent variable.
2. Draw the scatter plot.
3. Obtain the regression equation.
4. Plot the regression line.
5. Interpret the meaning of the regression coefficients a and b.
6. Predict the statistics marks for two students who miss 3 classes and 10 classes respectively.
7. Compute the coefficient of determination.
8. Compute the coefficient of correlation.