GP 4.2.1 Select analysis techniques.

[Achievement a]

Analysis methods and techniques for control of the process measurements are defined.

GP 4.2.2 Establish distributions that characterize the process performance.

[Achievement c]

Expected distributions and corresponding control limits for measurement results are defined.

GP 4.2.3 Determine assignable causes of process variation.

[Achievement b]

Each deviation from the defined control limits is identified and recorded.

Determine assignable causes of these deviations by analyzing collected data using the defined analysis techniques.

All deviations and assigned causes are recorded.

GP 4.2.4 Identify and implement corrective actions to address assignable causes.

[Achievement d]

Corrective actions are determined, recorded, and implemented to address assignable causes of variation.

Corrective action results are monitored and evaluated to determine their effectiveness.

GP 4.2.5 Establish separate distributions for analyzing the process

Achievement e]

Separate distributions are used to quantitatively understand the variation of process performance under the influence of assignable causes.