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The multiple linear regression folio is a general statistical tool intended for performing a simple analysis of existing data in order to investigate the effects of predictors on normally distributed responses. Only quantitative data can be analyzed. After you designate columns for predictors and responses and enter the data, you can perform the analysis in much the same way that it is performed on the Data tab of a design folio. You can also use the analysis results to predict response values given user-specified levels for the predictors.
Note:
If you are analyzing existing data specifically from a DOE perspective,
then the free form folio is more appropriate.
The free form folio can analyze both quantitative and qualitative factors,
and it can analyze responses that are not normally distributed (e.g.,
life data that fits a Weibull distribution). In addition, the free form
folio can be used to investigate interaction effects and optimize
factor settings.
Also note that the multiple linear regression and free form folios are
typically used for analyzing existing data. If you need to plan and implement
an experiment to obtain data, use the design folio. (See Building
a New Design.)
To add a multiple linear regression folio to your project, choose Insert > Tools > Multiple Linear Regression.
To use the folio, click the arrows in the column headers to specify which columns will contain predictors and which will contain response data. After you enter the data and select the appropriate analysis settings on the control panel, click Calculate to analyze the data.
The following topics describe how to work with multiple linear regression folios, including:
Select Columns window for assigning columns to predictors/responses.
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