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Qualitek-4 Download Link

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Click here to find out who are using our software, and how they are using it.

Demo - allows unlimited use of L-8 array for user's experiment designs and unrestricted review & analysis of over 50 experiment files included in the downloaded compressed file. (Note:  L-8 array can be used to design and analyze results of over 15 different types of experiments).  [If you are a student, we encourage you to utilize the DEMO capabilities and take advantage of our special academic price which allows you to purchase the electronic version of our  software at a much discounted price. Click here to order from our distributor ShareIt.Com using your credit card.  (Not for corporate buyers)  Review Qualitek-4 Brochure (pdf)

Basic Capabilities (review analysis capabilities first)
1. Install and Run Qualitek-4 (QT4) program from your computer and click OK past the Registration Screen to the experiment configuration screen. Notice that experiment file PISTON.Q4W is already loaded in memory. If not, OPEN file PISTON.Q4W.

2. Proceed to Review and Analyze Results of PISTON and other example experiments. Note that there are over 50 example experiments of all sizes included with the program.

3. Click Analysis menu and select Standard Analysis (either average or stand. deviation). Since PISTON has three samples/results per trial, QT4 will always remind you to perform S/N. Ignore this notice and click OK to proceed. In the next screen check Bigger is Better Quality Characteristic and click OK.

4. Review results and click on Graph if you wish to view it. Click OK when done.

5. While in the Main Effect screen, click Plot to view plots of Main Effect. Once you are in the graphics screen, click the "<<" or ">>"  button at the bottom of the graph to display other factor plots. Click OK to return to Main Effect screen.

6.  Click on Interaction button, to display interaction plots between any two factors. Select the Automatic option if you want QT4 to calculate interaction between all possible factors, even though you may not have thought about all the interactions or included them in your study. QT4 calculates N (N-1)/2 possible pairs of interactions for N factors and ranks them by Severity of their presence (Severity Index, 0 - 100%). Review the list and note the important pairs of interaction for future reference. Click OK or Cancel to return to Main Effect screen and click OK to proceed to ANOVA screen.

7.  In ANOVA screen, try POOLING the factor with least amount of influence (last column). To POOL factors, double click on the factor description. At prompt, review % Confidence Level and click OK. Notice how the ANOVA table gets updated. You can also try one or more of the following tasks.

       Pool another factor with the least influence
       Reset ANOVA
       Pool all factors with less than 98.6% confidence level.
       Plot bar graph , pie chart, and  Re-start ANOVA
       Review Pie diagram

8. Click OK to move to the OPTIMUM screen
       At the Optimum screen:
       Read expected response
       Convert this result to a real number when S/N analysis is used.
       Plot graph of factor contribution
       Find response for all factors at level 2 (Click on the Estimate button.)
       Go back to ANOVA and pool all factors below 10% influence
       Determine 90% confidence interval of the optimum response
       Return to optimum screen

9.  Click OK to return to the Experiment Configuration (main) screen. From the file menu, click on Open and select any other experiment file from the list of over 50 files (Open POUND.Q4W if you are interested in reviewing OEC). To review how the three separate objectives in evaluating the cake is combined into one single index (OEC), select OEC from the Edit menu item. Analyze results by following steps 3 -8.

Designing your Own Experiment
10. Prepare a list of factors and levels for a practice experiment (say 5 factors at 2-level each). Click on the DESIGN menu and select Manual Design. Check L-8 for your design. When in design screen, describe factors and their levels by assigning to any rows (which are columns of the array). Since you will be using five of the seven available columns, put your cursor on the unused column and click on the UNUSED button to designate the two columns as unused. Click OK to move to the Orthogonal Array screen. Click OK to experiment file screen. Supply only the first eight characters of your file . You need not enter the file extension, .Q4W, as it is automatically added.

11.  Automatic Experiment Design -  If you want Qualitek-4 to select the appropriate orthogonal arrays and design the experiment, select the Automatic Design option in the DESIGN menu in the main screen. Qualitek-4 can design experiments for most common situations. Give this a try.

12. After your design is completed, you may review the trial condition by clicking on REVIEW menu and by selecting Trial Condition. Should you want to carry out these experiments, you may print some or all the trial conditions. You may also save the trial conditions in a file to email/export electronically to remote locations.
 

 Experimental Results Entry
13.  Once the experiments are carried out, you will need to enter the results by clicking on RESULT menu and then, selecting Enter Result option. If your result includes multiple evaluation criteria, you will select Multiple Criteria (OEC) option. Enter results/evaluation criteria as applicable. When done entering results, perform analysis following steps 3 - 8 as described above.

For additional help with exploring program capabilities, review (included with the download compressed file) Getting Started with Qualitek-4 PowerPoint presentation file. This presentation shows you how to use Qualitek-4 for ANALYSIS and DESIGN tasks.