Problem in Minitab - ERROR * Factor Voltage is highly correlated with other terms

Elsmar Forum Sponsor

Miner

Forum Moderator
Staff member
Admin
#2
I understand the error, but would have to see your design to pinpoint what is wrong. If you can attach your Minitab file in version 18, I can trouble shoot it. If not, Copy/Paste your worksheet into Excel and attach.
 
#3
I understand the error, but would have to see your design to pinpoint what is wrong. If you can attach your Minitab file in version 18, I can trouble shoot it. If not, Copy/Paste your worksheet into Excel and attach.
thanks for reply me....I will attach my Minitab file in verision 17 , Ok???
 

Attachments

Miner

Forum Moderator
Staff member
Admin
#4
The problem is in the design of the experiment, not in the analysis. Factors A and B are 100% aliased (confounded) with each other. This means that you cannot determine which of these factors may be responsible for an effect. And, as the error stated the design is not an orthogonal design, which means there is some degree of aliasing between factors.

Since you are using more than two experimental levels (3 & 5), you cannot use a 2^k factorial design, you must use a general full factorial experiment, which will require 135 experimental runs. I recommend a 2^4 design (attached). With center points this will require 19 runs. This design is orthogonal, and the addition of center points will allow you to see whether there may be curvature in the response. If there is curvature, you will be able to add axial points and expand this into a response surface design.
 

Attachments

#5
The problem is in the design of the experiment, not in the analysis. Factors A and B are 100% aliased (confounded) with each other. This means that you cannot determine which of these factors may be responsible for an effect. And, as the error stated the design is not an orthogonal design, which means there is some degree of aliasing between factors.

Since you are using more than two experimental levels (3 & 5), you cannot use a 2^k factorial design, you must use a general full factorial experiment, which will require 135 experimental runs. I recommend a 2^4 design (attached). With center points this will require 19 runs. This design is orthogonal, and the addition of center points will allow you to see whether there may be curvature in the response. If there is curvature, you will be able to add axial points and expand this into a response surface design.
The problem is in the design of the experiment, not in the analysis. Factors A and B are 100% aliased (confounded) with each other. This means that you cannot determine which of these factors may be responsible for an effect. And, as the error stated the design is not an orthogonal design, which means there is some degree of aliasing between factors.

Since you are using more than two experimental levels (3 & 5), you cannot use a 2^k factorial design, you must use a general full factorial experiment, which will require 135 experimental runs. I recommend a 2^4 design (attached). With center points this will require 19 runs. This design is orthogonal, and the addition of center points will allow you to see whether there may be curvature in the response. If there is curvature, you will be able to add axial points and expand this into a response surface design.
please, can you complete the solution and find analysis of variables (anova) because Iam student and I do not have experience in dealing with Minitab, please....
 

Miner

Forum Moderator
Staff member
Admin
#6
It's not that simple. Since the design structure is seriously flawed, the best that you will be able to do is perform a regression analysis instead of an ANOVA. Even then, too many of the factors are highly correlated with each other to trust any results. This experiment should be designed correctly and run again.

1623789518741.png
 
#7
It's not that simple. Since the design structure is seriously flawed, the best that you will be able to do is perform a regression analysis instead of an ANOVA. Even then, too many of the factors are highly correlated with each other to trust any results. This experiment should be designed correctly and run again.

View attachment 27939
Well, can you do that? Can you complete the solution as you see fit and correct? I would be grateful for your efforts with me. There is no one to help me, even the supervisor does not know anything about Minitab. I am waiting for your reply
 

Miner

Forum Moderator
Staff member
Admin
#8
I assume that A D are the experimental factors? What are GRG, CO, Th, H and R? Five different responses?

Note: The results will be pretty much meaningless.
 
#9
I assume that A D are the experimental factors? What are GRG, CO, Th, H and R? Five different responses?

Note: The results will be pretty much meaningless.
what do you mean ((The results will be pretty much meaningless))
A D are inputs (factors) and GRG, CO, TH, H and R are output(responses). what do you mean ((The results will be pretty much meaningless)). Do you mean that the results I sent you can't be solved by Mintab???? what I do??? I do not know???
 
Last edited:

Miner

Forum Moderator
Staff member
Admin
#10
"To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of." Ronald Fisher
 
Thread starter Similar threads Forum Replies Date
Y Please help me solve a DOE problem - New Minitab User Using Minitab Software 36
G Minitab GLM (General Linear Model) - Problem with recognition of Level Using Minitab Software 1
M Problem creating a Macro in Minitab Using Minitab Software 4
V Problem with Persian fonts in Minitab Using Minitab Software 2
Beth Savage Problem switching DNS Elsmar Cove Forum Suggestions, Complaints, Problems and Bug Reports 0
M Help on formulating a LP minimization problem Manufacturing and Related Processes 2
J Mandatory Problem Reporting and Recalls Canada Medical Device Regulations 0
J How to keep MDD certificate valid when legal manufacturer has liquidity problem EU Medical Device Regulations 0
normhowe "The Problem with Quality Management: Process orientation, controllability and zero-defect processes as modern myths" Book, Video, Blog and Web Site Reviews and Recommendations 2
M Problem with nonlinear regression Using Minitab Software 12
M Problem Solving in Fiat Automobiles Problem Solving, Root Cause Fault and Failure Analysis 0
R Problem solving activity - Three hours to fix the issue Manufacturing and Related Processes 15
T Formal Q Self Assessment - Problem with assigning Product and Process Customer and Company Specific Requirements 1
NDesouza Go See, Think, Do (GSTD) Problem Solving Activity Food Safety - ISO 22000, HACCP (21 CFR 120) 8
Marc Medical device vulnerability highlights problem of third-party code in IoT devices Other Medical Device and Orthopedic Related Topics 1
P How far an operator can reach into a machine before it becomes an ergonomic problem CE Marking (Conformité Européene) / CB Scheme 5
V Ammeter calibration - Measuring head (on pic.) problem General Measurement Device and Calibration Topics 1
G Problem Resolution Report Monitoring - Customer complaint or PRR as general motors use Customer Complaints 12
S Relationship between IEC 62304 problem resolution and ISO 13485 IEC 62304 - Medical Device Software Life Cycle Processes 8
qualprod Add new action plans in CA, while waiting effectiveness - Same problem reappears ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 13
bryan willemot Documenting past problem history for fasteners for AS9100 Rev D AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 2
Marc Problem Opening Attachments Elsmar Cove Forum Suggestions, Complaints, Problems and Bug Reports 4
Marc Problem with 21 CFR Part 820 - US FDA Quality System Regulations (QSR) sub-forum link - 2 May 2019 Elsmar Cove Forum Suggestions, Complaints, Problems and Bug Reports 1
K Does anyone have a copy of a GM 5 Phase Problem solving form Problem Solving, Root Cause Fault and Failure Analysis 1
D Training for AS13000 - Problem Solving Requirements for Suppliers Training - Internal, External, Online and Distance Learning 17
eule del ayre Manual Inventory System - Problem is discipline of the employees Lean in Manufacturing and Service Industries 7
G When preventative action is prohibited by cost in 8D problem solving Problem Solving, Root Cause Fault and Failure Analysis 1
G When preventative action is prohibited by cost in 8D problem solving Problem Solving, Root Cause Fault and Failure Analysis 8
Marc vBulletin to Xenforo Import Problem Reports 28180928 Elsmar Cove Forum Suggestions, Complaints, Problems and Bug Reports 25
M Training in 8D Problem Solving as a Preventive Action? Problem Solving, Root Cause Fault and Failure Analysis 9
A 5Why vs. 8D - Problem Solving Problem Solving, Root Cause Fault and Failure Analysis 19
K Documented problem solving and documented error-proofing - IATF 16949 10.2.3 & 10.2.4 Internal Auditing 7
V Query on PA66+GF15% - Color variation (Natural to Yellowish) problem Manufacturing and Related Processes 20
J Can someone help me get the UCL AND LCL for this problem? Statistical Analysis Tools, Techniques and SPC 2
P Problem with IATF 16949 Clause 7.2.3 Requirements (Internal Auditor Competency) IATF 16949 - Automotive Quality Systems Standard 3
K Problem with Cable Composed of Coextruded Litz Wire and Tube Manufacturing and Related Processes 1
W Documented Problem-Solving for Automotive IATF 16949 - Automotive Quality Systems Standard 4
R Review of "Key Data" for contract labs, but SOP doesn't define "key data". Problem? Pharmaceuticals (21 CFR Part 210, 21 CFR Part 211 and related Regulations) 2
M Taguchi Loss Function Problem Misc. Quality Assurance and Business Systems Related Topics 2
R RoHS Compliance Problem with One Component RoHS, REACH, ELV, IMDS and Restricted Substances 5
Q Problem Solving Techniques - 5 why or Fishbone diagram ? Problem Solving, Root Cause Fault and Failure Analysis 8
S Problem Solving Database for Each Machine Manufacturing and Related Processes 5
L Suppliers Problem - One of our material suppliers is not ISO certified ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 12
J Should failure mode caused by Fixture problem be into PFMEA? FMEA and Control Plans 2
K Quality Manual Problem Root Cause Analysis Nonconformance and Corrective Action 8
Ron Rompen Unusual problem with Excel - Need some help Excel .xls Spreadsheet Templates and Tools 7
automoto International Problem Solving Guide Problem Solving, Root Cause Fault and Failure Analysis 2
R CQE Exam Problem Statistical Analysis Tools, Techniques and SPC 9
M Internal Audit Findings and Issuance Problem Internal Auditing 4
M Problem Solving: JDI (just do it) vs. A3 vs PDCA Projects Lean in Manufacturing and Service Industries 1

Similar threads

Top Bottom