Use this macro to plot a simple linear or quadratic regression line and display the predicted values on the plot. If the predicted values are for future values of X, then the predicted line and …

What is quadratic discriminant analysis? There is no assumption with quadratic discriminant analysis that the groups have equal covariance matrices. As with linear discriminant analysis, …

Notation ... Quadratic Formula The quadratic trend model, which can account for simple curvature in the data, is: Yt = β 0 + β 1 t + β 2 t 2 + et

The chemist should investigate the groups to determine their cause. The plot of the residuals versus ratio shows curvature, which suggests a curvilinear relationship between catalyst ratio …

Another way of modeling curvature is to generate additional models by using the log10 of x and/or y for linear, quadratic, and cubic models. In addition, taking the log10 of Y may be used to …

Generalized squared distance - Quadratic function The generalized squared distance from x to group t for the quadratic discriminant function is calculated as follows:

You can choose between the linear, quadratic, exponential growth or decay, and S-curve trend models. Use this procedure to fit a trend when your data have a very consistent trend and no …

When trying to fit curvature in the data, you can also fit a quadratic or cubic model, which adds quadratic or cubic terms to the model. Instead, consider transforming the X or Y variable …

In Stat > DOE > Mixture > Analyze Mixture Design > Terms, you can choose a linear, quadratic, special cubic, full cubic, special quartic, or full quartic model. Or, you can fit a model that is a …

A quadratic term and an interaction effect are also significant. The main effects that are parts of the interaction and the quadratic term are in the model, even though these effects are not …