Create a Fitted Line Plot with Confidence and Prediction Bands

Create a Fitted Line Plot with Confidence and Prediction Bands

Minitab®  – Procedure

  1. Select Stat >> Regression >> Fitted line plot...
  2. Specify the response and the predictor.
  3. Select Options... Under Display Options, select Display confidence interval and select Display prediction interval. Specify the desired confidence level — 95% is the default. Select OK.
  4. Select OK. A new window containing the fitted line plot will appear.

Example

For people of the same age and gender, height is often considered a good predictor of weight. The data set htwtmales.txt contains the heights (ht, in cm) and weights (wt, in kg) of a sample of 14 males between the ages of 19 and 26 years.

  1. Find a 95% prediction band for the weight of a randomly selected male, aged 19 to 26.
  2. Find a 95% confidence band for the average weight of all males, aged 19 to 26.

Minitab Dialog Boxes

minitab fitted line plot dialog box

minitab fitted line plot - options dialog box

Sample Minitab Output Plot

minitab fitted line plot

Video Review

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