Fitting a Surface By Least Squares in JMP®

Chapter 4, Printout 4


  1. Launch JMP and create a new data table.

  2. Enter the data.

    Screenshot: screenshot

  3. Compute the multiple linear regression.

    JMP computes a fit and generates four plots: an actual by predicted plot and three leverage plots.

    Screenshot (fit and actual by predicted plot): screenshot

    Screenshot (leverage plots): screenshot

  4. Save and analyze the residuals.

  5. Plot the residuals vs. x1.

    JMP displays a scatter plot of Residual y vs. x1.

    Screenshot: screenshot

  6. Plot the residuals vs. x2.

    JMP displays a scatter plot of Residual y vs. x2.

    Screenshot: screenshot

  7. Plot the residuals vs. x3.

    JMP displays a scatter plot of Residual y vs. x3.

    Screenshot: screenshot