|DataLab is a compact statistics package aimed at exploratory data analysis. Please visit the DataLab Web site for more information....|
|Home Features of DataLab Mathematical/Statistical Analysis Modelling Multiple Regression Multiple Linear Regression Calculate an MLR Model|
|See also: Apply an MLR Model
Calculate an MLR Model
The command Math/Multiple Regression/Multiple Linear Regression/Calculate Model... serves to calculate an MLR model. For that purpose first the variables have to be specified by clicking into the corresponding variable list. The independent variables (descriptors) are at the left, the dependent variable (target variable) can be selected at the right. After clicking into the variable list the variable selection dialog allows to select the desired variables.
In order to calculate the MLR model the button "Calculate" () has to be pressed. After that the most important diagrams for checking the regression are displayed in the switchable diagnostic window. These diagrams contain the plot of the estimated vs. the actual target values, the distribution of the rediduals, and the residuals plotted against an arbitrary independent variable or against the object number. The details on the results can be viewed in the "Details" window.
The user may store the model either as a script () or as a binary model (). It is recommended to use the binary model, since this can be easily applied to other data sets by means of the command Apply Model....
In order to make the variable selection easier both the detection of multicollinearities (button ) and the methods for the selection of variables (button ) can be started directly from the MLR window.