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VOC
Voice of the Customer

CTX
 C = Critical
 T = To
 X = Characteristic {time, cost, satisfaction}

DMAIC
 D  Define
 M  Measure
 A  Analyze
 I  Improve
 C  Control

SIPOC
 Supplier
 Input
 Process
 Output
 Customer
made to define the subprocesses in major business processes, and to identify possible measure

MSA
Measurement System Analysis

ANOVA
Analysis of Variance
a statistical technique for analyzing data that tests for a difference between two or more means by comparing the variances *within* groups and variances *between* groups.”

DOE
Design of Experiments

OFAT
One Factor at a Time

FEMA
Failure Mode and Effect Analysis
A procedure and tools that help to identify every possible failure mode of a process or product, to determine its effect on other subitems and on the required function of the product or process

DMAIC
Define, Measure, Analyze, Improve, Control
Used when a product or a process already exists in a company

DMADV/ DFSS
Define, Measure, Analyze, Design, Verify / Design for Six Sigma
Used when a new process or a product has to be developed

CTQ
Critical to Quality {tree}

PERT
Program evaluation and review technique
{A version of the Activity Network Diagrams}

FS
Foremost Start  The earliest time that each task can begin.

FF
Foremost Finish  The earliest time a task can conclude

LS
Latest Start  the Latest time that each task can begin without disturbing the project timetable

LF
Latest Finish  The latest time that each task can conclude without disturbing the project timetable.



Lowercase Sigma
Standard deviation of a population

s
Standard Deviation of a Sample

Uppercase Sigma
Summation

n
Sample Size
Number of data in a sample

N
Population Size
Number of data in a population

Mean of a sample size
Average of a sample size

Mean of a Population
Average of a Population

