12.7 Six points have these coordinates:

a. Find the least-squares line for the data.

b. Plot the six points and graph the line. Does the line appear to provide a good fit to the data points?

c. Use the least-squares line to predict the value of y when x = 3.5.

d. Fill in the missing entries in the MINITAB analysis of variance table.

Transcribed Image Text:

X A 2 3 4 5 6 5.6 4.6 4.5 3.7 3.2 2.7