The training part of SPC Wizard for variables contains a graphical simulation of a launcher firing tennis balls. The program records the positions where the balls land. Landing position is influenced by both common and special causes of variation. The program is developed for students who already have a basic knowledge of SPC. It teaches them how to apply SPC in manufacturing. Special causes of variation can be programmed to occur at pre-set shot numbers so customized examples of data can be produced for training. Students can make control charts and calculate control limits to detect the special causes of variation. The program supports the students with full explanation of the principles and many helpful features. The program also describes capability analysis and the usage of the capability indices (Cp, Cpk, Pp and Ppk). Click on the button below to see an example of a training session explaining process capability analysis.
In the training module, attribute processes are simulated by taking samples from a box filled with coloured beads. The results of the simulation can be quickly displayed on control charts, a Pareto chart, a scattergram or a table of results. The training module also contains a complete simulation of Deming’s red beads experiment.
SPC Tutorial SPC Wizard contains a tutorial where people are guided through the simulations to get better understanding of the different concepts of SPC. The complete tutorial is also given on the website www.statisticalprocesscontrol.com.
This site shows results of a session using the tutorial.
SPC Wizard is capable of reading data from ACCESS, Excel or DataLyzer directly. This means you can directly show control charts and capability analysis with superb analysis possibilities of your data without manipulation of your data files. With a set-up Wizard, you can quickly define a data entry table for new data, including date and time fields, note fields, fields with other production information (like process settings and tracking and tracing information). Once data has been entered you have full analysis capabilities with the control chart, histogram, Pareto chart, multi vari analysis and scattergram. SPC Wizard contains many features to facilitate data analysis, for example:
There is a guided tour available to get a full insight of SPC Wizard. Please click on the button below. If the tour is started in explorer you can show the demo in full screen by pressing F11 on your keyboard.
In the game mode the student is confronted with 4 possible special causes of variation: Two different suppliers of balls, the room temperature, inconsistency of the launcher caused by a weak spring and debris on the floor. The student has to use the control chart to identify which of the special causes are affecting the process. The game is won when the landing position of the last 100 shots is very close to target. The game is lost if the student tries to remove a special cause which was not affecting the process.
You can download the PDF brochure