• X-charts display subgroup means (averages)
 • R-charts display subgroup ranges (maximum – minimum)
 • S-charts display subgroup standard deviations
 • Presummarize charts display subgroup means and standard deviations
 • Individual Measurement charts display individual measurements
 • Moving Range charts display moving ranges of two successive measurements
Levey-Jennings charts show a process mean with control limits based on a long-term sigma. The control limits are placed at 3s distance from the center line. The standard deviation, s, for the Levey-Jennings chart is calculated the same way standard deviation is in the Distribution platform.
 Statistic Proportion Count Sigma Binomial p-chart np-chart Poison u-chart c-chart
The CCB makes a few decisions for you based on the variable selected. For example, if there is no X variable, a c-chart is originally created because there is no way to estimate the binomial distributions. Upon adding an X variable (or lot size), the platform switches to a np-chart if the count per subgroup is less than the subgroup sample size. Once the basic chart is created, you can use the menus and other options to change the type, the statistic, and the format of the chart.
 • p-charts display the proportion of nonconforming (defective) items in subgroup samples, which can vary in size. Because each subgroup for a p-chart consists of Ni items, and an item is judged as either conforming or nonconforming, the maximum number of nonconforming items in a subgroup is Ni.
 • np-charts display the number of nonconforming (defective) items in subgroup samples. Because each subgroup for a np-chart consists of Ni items, and an item is judged as either conforming or nonconforming, the maximum number of nonconforming items in subgroup i is Ni.
 • c-charts display the number of nonconformities (defects) in a subgroup sample that usually, but does not necessarily, consists of one inspection unit.
 • u-charts display the number of nonconformities (defects) per unit in subgroup samples that can have a varying number of inspection units.
 Statistic Count Sigma Negative Binomial g-chart Weibull t-chart
 Chart Types Control Chart Builder Options Points > Statistic Limits > Sigma Variable Charts without grouping (X) variable or nonsummarized data: Individual Individual Moving Range Moving Range on Individual Moving Range Moving Range Levey Jennings Individual Levey Jennings Variable Charts with grouping (X) variables or summarized data: XBar (limits computed on range) Average Range XBar (limits computed on standard deviation) Average Standard Deviation R Range Range S Standard Deviation Standard Deviation Levey Jennings Individual measurements. Control limits are based on an estimate of long-term sigma. Levey Jennings or overall Standard Deviation Presummarize Charts Individual on Group Means Average Moving Range Individual on Group Std Devs Standard Deviation Moving Range Moving Range on Group Means Moving Range on Means Moving Range Moving Range on Group Std Devs Moving Range on Std Dev Moving Range Attribute Charts p-chart Proportion Binomial np-chart Count Binomial c-chart Count Poisson u-chart Proportion Poisson Rare Event Charts g-chart Count Negative Binomial t-chart Count Weibull