Set multiple ranges for control, so process changes can be controlled to their new level. Control limits and Run Tests based on the selected distribution. Process Capability Analysis To truly measure the capability of your process both your process output and your requirements must be correctly stated. SPC-PC IV provides analysis options capable of meeting your requirements. Calculations include Cp, Cpk, Cr, Cpm, and Z values, as well as predicted yields.
Confidence limits are available for capability indices.
To examine the relationship between two different characteristics, regression techniques are used to estimate linear models and the correlation between the characteristics. Confidence Limits may be used to identify data which does not fit the regression model. When the cost of process shifts or sampling is high, many customers use the CuSum chart for increased sensitivity to small process shifts, or for comparable protection at lower sampling costs. An analysis tool rather than a control tool, the Autocorrelation function provides a means of determining the extent to which current process conditions are dependent on previous conditions. If autocorrelation is significant, standard control charting may not be used since the independence assumption is violated.