DMAIC: Measure Robert Setaputra

Measure The measure phase begins with the identification of the key process metrics. Once the key process metrics have been specified, related process and customer data is collected.

Purpose of Measure Phase To validate the data To help the team narrowing the range of potential causes need to be investigated in Analyze phase.

Framework Business Problem Business Problem Business Problem Statistical Problem Statistical Problem Statistical Problem Measurement Business Solution Business Solution Business Solution Statistical Solution Statistical Solution

Measurement System Analysis MSA is a study to determine the extent and acceptability of system measurement 5 Properties Biasness Stability Linearity Repeatability Reproducibility

Gage R&R Repeatability & Reproducibility (R&R) Repeatability Variation that is due to the measurement device (same operator, same part, same device). Within person variation. Reproducibility Variation that is due to the measurement system (different operators, different parts, same device). Between person variation

Gage R&R Study Design (Crossed Design) Select a set of representative parts. Select a group of operators to measure the parts. Ask the operators to measure for each part repeatedly. Ex. 5 parts, 2 operators, and 4 replicates.

Gage R&R using Minitab Gage R&R Run Chart Gage R&R Study (Crossed) – ANOVA Gage R&R Contribution Exercise: Table 5.6 (p. 121) Table 19.6 (p. 617)