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Have a question about experiment designs?
Be sure to visit our Tips on How to Design and Analyze Experiments and get a confirmation on your own experiment designs.

Getting Started with Qualitek-4

Experiment Planning
You must plan your experiment with utmost care. Follow Recommended Experiment Planning Steps to conduct your planning session. You would benefit by closely following these steps regardless of the size of your team or experiment.

Experiment Designs
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, 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 name. The file extension, .Q4W, is automatically added.

After design is completed, you may review the trial condition by clicking on REVIEW menu and selecting Trial Condition. Should you want to carry out these experiments, you may print some or all the trial conditions.

Result Entry 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.

Trouble shooting:
1. If the graphic server is not properly registered or the file is missing, the program may crash when graphic display button is clicked (Runtime Error ____). The problem can be eliminated by registering it following the procedure outlined.

2. Problem with TYPELIB.DLL in Windows 3.11 for Workgroups

3. Problem due to REGIONAL SETTINGS

Qualitek-4 data file format requires English (United States) format. If your Windows is set to run in a non-English speaking settings, you may have difficulty with proper retrieval and display of results. If you experience such problems with the default experiment file PISTON.Q4W, you need to correct the setting following the steps shown:

a. From Windows (Xp) START, select  CONTROL PANEL. 
b. Select Regional and Language Options.
c. Select Regional Options tab 
d. Set "English (United States)" as your preference.
e. Restart your computer and run Qualitek-4

Help with Installation

Thank you for downloading the Full Featured Working Model (DEMO) of our Qualitek-4 for Windows software. To install Qualitek-4, go to the RUN prompt in your Windows program and run the SETUP.EXE from the directory (say C:\TEMP) into which you unzipped the zipped files you downloaded (Q4WDEMO.ZIP). Make sure that you have NO OTHER APPLICATIONS running during the install process. This means that you might have to temporarily take anything that is in your STARTUP group out until after the installation (as you need to do while installing Microsoft Office).

While installing you will need the registration number assigned to you. For evaluation/DEMO copy of the program, use the word DEMO as the registration number.

If you wish to share (in case of downloaded ZIPPED DEMO program) the program with others, copy SETUP.EXE in a disk and label it as Disk#1, SETUP.W02 in DISK#2, and SETUP.W03 in Disk#3.

 Practice Session

1. Run Qualitek-4 (QT4) program from your computer and click OK past the Registration Screen to the experiment configuration screen.
2. Notice that experiment file PISTON.Q4W is already loaded in memory. If not, OPEN file PISTON.Q4W. Since this experiment is already designed and carried out, it has results, and you are in a position to proceed with analysis of results. (In case of a new experiment, like the one you may want to try, you will always start with the design option.)

3. Click Analysis menu and select Standard Analysis. Since PISTON has three samples/results per trial, QT4 will remind you to perform S/N. 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 Nx(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 to 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, 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.

d) Plot bar graph, pie chart, and Reset ANOVA

Click OK or Optimum button to move to the optimum screen

Click OK to return to the main screen. From the file menu select Open and select any other experiment file from the list of over 50 files. Analyze results by following steps 3 -8.

Experiment Designs - You will have option to let Q4W design the experiment or do it yourself. In automatic design, you simply indicate what are your factors and levels, it selects the array and assigns the factors to the appropriate columns. You also have a limited selection of interactions and outer array designs. While automatic design can handle most of your common experiment designs, the manual design option allows you to create the special designs to suit your needs.

Running Experiments - Once you are satisfied with your experiment design, Q4W readily describes the recipes for you to carry out the experiments. It also suggest the random order of conducting each of the experiment which are described in separate pages to resemble an work order.

Analysis of Results - The three basic steps in analysis; Main Effect, ANOVA, and Optimum studies are carried out in sequence with click of OK buttons. Analyses can be performed using Standard or S/N for Smaller, Bigger, Nominal or Dynamic Characteristics.

Miscellaneous Features - Automatic test of presence of interaction, Plot of interaction between two, three and four level factors, Least Squares quadratic curve fitting between average effects for three and four level factors, plot of Main Effects, Bar graph and Pie diagram for ANOVA results, Stacked diagram for factor contributions to Optimum, etc.