Analysis of an Experiment with Two-Level Factors
Analyzing the Results of a 2(k-p) Experiment
Click the OK button in the Design & Analysis of Experiments with Two-Level Factors dialog box or the Searching for and Analyzing Designs with Two-Level Factors dialog box to display the Analysis of an Experiment with Two-Level dialog box (if you have chosen to analyze a design by selecting the Analyze design tab). This dialog box contains nine tabs: Quick, Model, Design, ANOVA/Effects, Means, Review/save residuals, Residual plots, Box-Cox, and Prediction & profiling. You can use the options described here regardless of which tab you select. See also the Note on unbalanced designs and singular effects matrices.
- Summary box
- The Summary box at the top of the dialog box displays a summary of the design. If the current design is a standard design, as generated by the Experimental Design module, Statistica will also display the resolution of the standard design (ignoring replications, added center-points, etc.). Note that if there is an asterisk (*) next to the displayed resolution, the respective value only applies if you ignore the blocking in the design.
Copy button Click the Copy button to copy either the selected text (if text has been selected) in the Summary box or all of the text (if no text has been selected) to the Clipboard. Note that the copied text retains formatting information (such as font, color, etc.).
Contract/Expand button Click the Contract/Expand button to contract or expand the Summary box. When contracted, you can see only one line of the Summary box text and can scroll through the text using a scroll bar. Note that when contracted the text is scrolled so that the first non-blank line is at the top. When expanded (the default setting), the entire Summary box will be displayed on the Results dialog box.
- Variable
- If multiple dependent variables are specified for the analysis, use the Variable box to select the dependent variable for which to review the results. Note that you can quickly print to a report the most important results for all variables: 1) select the All variables check box next to the Print results button, and 2) click the Print results button. See also the note on Missing Data and Multiple Dependent Variables.
- Print results
- Click the Print results button to compute the main effects and interactions estimates, the regression coefficients, and the ANOVA table for the current variable and send them to a report. Note that if you don't have a Send to report option selected in the Output Manager, you will be prompted to select that option here. To send the results to a printer, see printing a report.
- All variables
- Select the All variables check box to send the results for all dependent variables in the current analysis to a report when you click the Print results button.
- Summary
- Click the Summary button to produce a spreadsheet with the ANOVA effect estimates and coefficients for the coded model. The effects that are computed depend on the current model, as specified via the options in the Include in model group box on the
Model tab. Additional options for confidence intervals, Alpha highlighting and sorting effects are available on the
ANOVA/Effects tab. All estimates in this spreadsheet pertain to the coded factor settings, that is, to the factor settings scaled to the ±1 range. To see the results for the original (untransformed) factor settings, click the Regression coefficients button on the
ANOVA/Effects tab. For a description of the statistics given in this spreadsheet, see
Main Effects and Interactions for Experiments with Two-Level Factors.
Cancel. Click the Cancel button to return to the Design & Analysis of Experiments with Two-Level Factors dialog box.
- By Group
- Click the By Group button to display the By Group specification dialog box.
Options. Click the Options button to display the Options menu.