Use the Correlation and Regression applet for Exercises 76–78.

Question 4.277

76. In these applet exercises, use the “thermometer” above the graph (where it says “Sum of squares =”) to help find the least-squares regression line interactively.

  1. Select five points so that the correlation coefficient is about 0.8. Then select “Draw line.”
  2. Make your best guess about where the least-squares regression line should be, and draw the line there.