Types of Control Charts
ProDiver control charts fall into one of two categories: variable or attribute.
- Variable control charts plot measurable process data in a time-ordered sequence.
- Attribute control charts plot data that is counted instead of being measured.
You can use ProDiver to produce the following types of control charts:
X-Chart
X-Charts present variable data. Each data point is the statistical mean of a subgroup of values.
The statistical principles used in calculating the UCL and LCL are based on normal distribution. By default, UCL and LCL are calculated at three standard deviations from the mean. However, these values can be adjusted on the
See also Control Chart Formulas.