control charts
DESCRIPTION
An overview of using Control Charts in SigmaXL Established in 1998, SigmaXL Inc. is a leading provider of user friendly Excel Add-ins for Lean Six Sigma graphical and statistical tools and Monte Carlo simulation. SigmaXL® customers include market leaders like Agilent, Diebold, FedEx, Microsoft, Motorola and Shell. SigmaXL® software is also used by numerous colleges, universities and government agencies. Our flagship product, SigmaXL®, was designed from the ground up to be a cost-effective, powerful, but easy to use tool that enables users to measure, analyze, improve and control their service, transactional, and manufacturing processes. As an add-in to the already familiar Microsoft Excel, SigmaXL® is ideal for Lean Six Sigma training and application, or use in a college statistics course. DiscoverSim™ enables you to quantify your risk through Monte Carlo simulation and minimize your risk with global optimization. Business decisions are often based on assumptions with a single point value estimate or an average, resulting in unexpected outcomes. DiscoverSim™ allows you to model the uncertainty in your inputs so that you know what to expect in your outputs.TRANSCRIPT
Control Charts -
SigmaXL® Version 6.1
Control Charts: Overview
Individuals & Moving Range Charts
X-Bar & R/S Charts
I-MR-R/S Charts (Between/Within)
Control Chart Selection Tool
Use Historical Limits; Flag Special Causes
Add Comments as Data Labels
Summary Report on Test for Special Causes
Use Historical Groups to Display Before VS After Improvement
Scroll Through Charts
Process Capability Report (Long Term/Short Term)
Individuals Charts for Non-normal Data: Johnson Transformation
Box-Cox Power Transformation
Reliability/Weilbull Analysis
Training Opportunities
Control Charts
Individuals
Individuals & Moving Range
X-bar & R
X-bar & S
P, NP, C, U
P’ and U’ (Laney) to handle overdispersion
I-MR-R (Between/Within)
I-MR-S (Between/Within) Back to Index
Control Charts
Tests for Special Causes
Special causes are also labeled on the control chart data point.
Set defaults to apply any or all of Tests 1-8
Control Chart Selection Tool
Simplifies the selection of appropriate control chart based on data type
Process Capability report
Pp, Ppk, Cp, Cpk
Available for I, I-MR, X-Bar & R, X-bar & S charts. Back to Index
Control Charts
Add data to existing charts – ideal for
operator ease of use!
Scroll through charts with user defined
window size
Advanced Control Limit options: Subgroup
Start and End; Historical Groups (e.g. split
control limits to demonstrate before and after
improvement) Back to Index
Control Charts
Exclude data points for control limit calculation
Add comment to data point for assignable cause
± 1, 2 Sigma Zone Lines
Control Charts for Nonnormal data
Box-Cox and Johnson Transformations
16 Nonnormal distributions supported (see Capability
Combination Report for Nonnormal Data)
Individuals chart of original data with percentile based
control limits
Individuals/Moving Range chart for normalized data with
optional tests for special causes Back to Index
Control Charts:
Individuals &
Moving Range Charts
Back to Index
Control Charts:
X-bar & R/S Charts
93.92
100.37
106.81
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89.52921561
94.52921561
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104.5292156
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Back to Index
Control Charts: I-MR-R/S
Charts (Between/Within)
91.50
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107.35
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Back to Index
Control Chart Selection
Tool
Simplifies the
selection of
appropriate control
chart based on
data type
Includes Data
Types and
Definitions help
tab.
Back to Index
Control Charts:
Use Historical Limits;
Flag Special Causes
1
1
5
100.37
93.92
106.81
93.15
95.15
97.15
99.15
101.15
103.15
105.15
107.15
109.15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
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3
Back to Index
Control Charts:
Add Comments as Data Labels
Back to Index
Control Charts:
Summary Report on
Tests for Special Causes
Back to Index
Control Charts:
Use Historical Groups to
Display Before Versus
After Improvement
Mean CL: 0.10
-6.80
7.00
-19
-14
-9
-4
1
6
11
16
21
26
31
Ind
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ua
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De
liv
ery
Tim
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Before Improvement After Improvement
Back to Index
Control Charts:
Scroll Through Charts With
User Defined Window Size
Back to Index
Control Charts:
Process Capability Report
(Long Term/Short Term)
Back to Index
Individuals Chart for
Nonnormal Data:
Johnson Transformation
Back to Index
Individuals/Moving Range
Chart for Nonnormal Data:
Johnson Transformation
Back to Index
Control Charts:
Box-Cox Power
Transformation
Normality Test is
automatically applied
to transformed data!
Back to Index
Reliability/Weibull
Analysis
Weibull Analysis
Complete and Right Censored data
Least Squares and Maximum Likelihood
methods
Output includes percentiles with confidence
intervals, survival probabilities, and Weibull
probability plot.
Back to Index
SigmaXL® Training
We now offer On-Site Training in SigmaXL.
Course Duration: 4.5 Days.
Instructor is John Noguera, SigmaXL co-founder,
Six Sigma Master Black Belt, Motorola University
Senior Instructor.
Hands-on exercises with catapult.
Back to Index
SigmaXL® Training
Course Contents:
Day 1: Introduction to SigmaXL, Basic Graphical Tools and Descriptive Statistics
Day 2: Measurement Systems Analysis, Process Capability
Day 3: Comparative Methods, Multi-Vari Analysis
Day 4: Correlation, Regression and Introduction to DOE
Day 5: Statistical Process Control Back to Index