Fitting a Quadratic in JMP®

Chapter 4, Printout 2


Section 1: Making a Fitted Quadratic Plot

  1. Launch JMP and create a new data table.

  2. Enter the data.

    Screenshot: screenshot

  3. Generate a fitted quadratic plot of the data.

    JMP fits a quadratic to the points, plots the quadratic, and displays an analysis of the fit.

    Screenshot: screenshot


Section 2: Obtaining Additional Numerical Summaries

  1. Save predicted y values for the x values given in the table.

    JMP saves the predicted y values to a new column in the data table.

    Screenshot: screenshot

  2. Save the residuals.

    JMP saves the y residuals to a new column in the data table.

    Screenshot: screenshot


Section 3: Generating Additional Plots

  1. Plot Residuals vs. x.

    JMP plots residuals vs. x and appends the plot to the current window.

    Screenshot: screenshot

  2. Generate a Normal Plot of the Residuals.

    JMP generates a normal plot and displays it in the current window.

    Screenshot: screenshot