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Fit Analyses |
In the Polynomial Fit dialog, you enter the degree for the polynomial fit. Select the Polynomial Equation or Parameter Estimates options to create a Polynomial Equation or Parameter Estimates table for the fitted curve.
Information about the polynomial fit is displayed in a table, as illustrated by Figure 39.37 The information includes the R2 value and an F statistic and its associated p-value for testing the null hypothesis that all parameters are 0 except for the intercept. A parametric regression fit table includes the following:
Figure 39.37 displays a quadratic polynomial fit with Polynomial Equation and Parameter Estimates tables.
You can use the Degree(Polynomial) slider in the Parametric Regression Fit table to change the degree of the polynomial curve fit. However, these will not change the Polynomial Equation and Parameter Estimates tables. You can produce a new Polynomial Equation or Parameter Estimates table by selecting the Polynomial Equation or Parameter Estimates option from the Polynomial Fit dialog.
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