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# DMAIC Measure

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```									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

Problem                  Problem

Measurement

Solution                 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
 Variationthat 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)

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