Quality Managementv1

Process Capability Index (Cpk)

Statistical measure of how well a process can produce output within specification limits.

Owner: Unassigned
Updated: 10/30/2025
Calculation Formula
ENGLISH
MIN((USL - Mean) / 3σ, (Mean - LSL) / 3σ)
Python Example
A process with Cpk of 1.5 produces consistent output well within specifications.
Entity Applicability
Which business entities use this KPI
Standard Calculation
8 of 8 entities
100%
Entity-Specific Notes

Cpk ≥ 1.33 is considered capable. Higher values indicate more consistent, centered processes.

Entity List (8)
MENA-01•Dubai Terminal
EU-02•Hamburg Terminal
HQ•Headquarters
ASIA-02•Hong Kong Terminal
EU-01•Rotterdam Terminal
ASIA-01•Singapore Hub
US-01•US East Terminal
US-02•US West Terminal
Additional Information
Industry
Heavy Manufacturing, CPG
Tags
Heavy ManufacturingCPG
Status
active
Local Network
Data Quality Dependencies
Critical DQ dimensions for this KPI
Accuracy
high

The degree of closeness of data values to real values.

Critical for Process Capability Index (Cpk) accuracy and reliability

Completeness (Data values)
high

The degree to which all required data values are present.

Critical for Process Capability Index (Cpk) accuracy and reliability

Precision (2 - Statistical Spread)
high

The degree to which the error in data values spreads around zero (in statistics).

Critical for Process Capability Index (Cpk) accuracy and reliability

Validity
high

The degree to which data values comply with rules.

Critical for Process Capability Index (Cpk) accuracy and reliability

Quick Stats
DQ Dependencies4
Applicable Entities8/8
Versionv1
API Access
GET /api/kpis/process-capability-index-cpk