1.
Select Help > Sample Data Library and open Drug.jmp.
2.
Select Analyze > Fit Model.
3.
Select y and click Y.
4.
Select Drug and x and add these to the Construct Model Effects list.
5.
6.
Click Run.
7.
From the red triangle menu next to Response y, select Effect Screening > Scaled Estimates.
The report (Scaled Estimates Report) indicates that the continuous factor, x, is centered by its mean and scaled by its half-range.
Scaled Estimates Report
The model fits three parallel lines, one for each Drug group. The x values range from 3 to 21. The Scaled Estimate for x, 8.8846543, is half the difference between the predicted value for x = 21 and the predicted value for x = 3 for any one of the Drug groups. You can verify this fact by selecting Save Columns > Prediction Formula from the report’s red triangle menu. Then add rows to obtain predicted values for each of the Drug groups at x = 21 and x = 3.
So, over the range of x values in this particular data set, the impact of x is to vary the response over a range of about 17.8 units. Note that the parameter estimate for x based on the raw data is 0.9871838; it does not permit direct interpretation in terms of the response.

Help created on 9/19/2017