In Figure 11, we have illustrated the output from MINITAB commands for fitting a straight line. To create the scatter plot, without the fitted line, choose:

Graph > Scatter plot. Choose Simple. Click OK.

Type C2 in Y variables and C1 in X variables.

Click OK.

Use MINITAB (or another package program) to obtain the scatter diagram, correlation coefficient, and regression line for:

(a) The GPA and GMAT scores data of Table 7 in Example 3.

(b) The hydrogen x and carbon y data in Exercise 3.25.