The independent variables (up to 9) and the dependent variable for the fit can be parameters or expressions. Up to fifteen constraints can be put on the data. You can use symbols to distinguish your data but the regression is done over all points. Figure 8 is a graph of the dependent variable vs the fitted value of the dependent variable.

**Figure 8:** Multiple linear regression plot

Edit,Print,Plot,Regress,...? R Dependent variable? TAUE*1000. Independent variables? TE IP/100. NE/1E13 ; Dependent variable? Independent variables? Constraints? Symbols? Error parameter? Power fit? Risk level? Predict new data points? ANOVA table to a file? Set? ; Graph of estimated TAUE vs TAUE RETURN Display the ANOVA table? Y

A graph of the estimated dependent variable vs the observed dependent
variable is shown. The regression coefficients are shown at the top
of the page. If an error parameter is specified, error bars are
displayed and the errors are used in the regression. If you want a
linear least squares fit of this
result, enter `F` after the graph has been drawn. See
section 2.6 for a table of the options that are available
after the graph has been drawn. Note that some of the options for the
regression program are set from the PLOT menus. For example,
you can use the EXTRAS menu in plot to make a color graph in
REGRESS. Following the graph you can optionally display the
ANOVA table as shown in Figure 9.

The power fit equation is , where *dv* is the
dependent variable and *iv*1, *iv*2 are independent variables. If any
of the variables are zero, that record is skipped.

You can predict new data points from the regression. After selecting
the regression variables, use the `PR` option to turn on the
prediction code. Then after you see the ANOVA table, you'll
be asked for the new *x* values. Enter the values and you'll see the
statistics associated with the new points. Enter `;` to return to
the *main* regression program.

All output in REGRESS is labeled with the database, tables, today's date, a sequence number, and the number of points retrieved.

Fri Jul 11 17:05:56 EDT 1997