| cp | Process Potential Index (Cp) |
| cpk | Process Capability Index (Cpk) |
| cpl | Lower Capability Index (Cpl) |
| cpm | Taguchi Capability Index (Cpm) |
| cpmk | Modified Taguchi Capability Index (Cpmk) |
| cpu | Upper Capability Index (Cpu) |
| cpy | Generalized Process Capability Index (Cpy) |
| pci | Compute a Process Capability Index |
| pci_ci | Bootstrap Confidence Interval for a Process Capability Index |
| pci_dist | Create a Distribution Specification for Process Capability Analysis |
| pci_dist_normal | Normal Distribution Shortcut |
| pci_grid | Sensitivity Grid of Process Capability Indices |
| plot.pci_grid | Plot a Process Capability Sensitivity Grid |
| pp | Performance Index (Pp) |
| ppk | Performance Capability Index (Ppk) |
| ppl | Lower Performance Index (Ppl) |
| ppu | Upper Performance Index (Ppu) |
| print.pci_ci | Print method for pci_ci objects |
| print.pci_dist | Print method for pci_dist objects |
| z_level | Sigma Level (Z) |