Control Chart Constants Table
Statistical constants are used for both variable control charts like the XmR, XbarR and XandS charts and in process capability calculations. These constants are determined based on the subgroup size.
Control Chart Constants used in QI Macros calculations
Other Capability Analysis and Control Chart Formulas
Why Choose QI Macros Over Other Control Chart Software?
Affordable
- Only $329 USD - less with quantity discounts
- No annual subscription fees
- Free technical support
Easy to Use
- Works right in Excel
- Create a chart in seconds
- Easy to customize & share charts
Proven and Trusted
- More than 100,000 users
- In More than 80 countries
- Five Star CNET Rating - Virus free
