## General Questions

### Q1

What are $$Q-Q$$ plots useful for?

### Q2

For the following data, plot the theoretically expected $$z$$ score as a function of the actual $$z$$ score (a $$Q-Q$$ plot).

 0 1.2 0 1.2 0 1.2 0 1.2 0 1.3 0 1.3 0.1 1.3 0.1 1.3 0.1 1.3 0.1 1.4 0.1 1.4 0.2 1.5 0.2 1.6 0.3 1.7 0.3 1.7 0.4 1.7 0.5 1.8 0.6 1.8 0.6 1.9 0.6 1.9 0.6 2.0 0.6 2.0 0.6 2.0 0.6 2.1 0.6 2.1 0.6 2.1 0.7 2.1 0.7 2.1 0.8 2.1 0.8 2.1 0.8 2.3 0.8 2.5 0.8 2.7 0.9 3.0 1 4.2 1 5.0 1.1 5.7 1.1 12.4 1.2 15.2 1.2

### Q3

For the data in problem 2, describe how the data differ from a normal distribution.

## Questions from Case studies

### Q4

For the "SAT and College GPA" case study data, create a contour plot looking at University GPA as a function of Math SAT and High School GPA. Naturally, you should use a computer to do this.

### Q5

For the "SAT and College GPA" case study data, create a $$3D$$ plot using the variables University GPA, Math SAT, and High School GPA. Naturally, you should use a computer to do this.