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Everything posted by Mayank Gupta

Class Imbalance
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Sourabh Nandi and Ransingh have provided the best answer to the question for highlighting the method to evaluate a classification problem, ways to address class imbalance issues and providing multiple examples. 5 replies

 class imbalance
 data analytics

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Alpha and Beta
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Aritra Das Gupta has given the best answer to this question for correctly explaining the effects of a higher and a smaller alpha along with many relevant examples. 4 replies

 hypothesis testing
 type 2 error

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Process Door vs Data Door
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
All the published answers are correct and are winners for this question. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 5 replies

 data door
 process door

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Golden Ratio
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
While all published answers have clearly and correctly defined Golden Ration, Natwar Lal has given the maximum number of examples for applicability in various businesses and hence has been selected as the best answer. Congratulations! 4 replies

 design thinking
 phi

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Why DPMO is calculating in Millions?? Why not in Billion??
Mayank Gupta replied to Junaid's topic in What is Lean Six Sigma?
Hi Junaid Feel free to convert DPMO to DPBO (Defects Per Billion Opportunities) if you feel like. DPMO is only a unit of measurement and hence can be changed if required. Having said that, I guess a more practical question could be why did someone come up with per million and not billion. In my opinion, it is based on the highest magnitude imaginable at the time of inception. Six Sigma got started in 1980s at Motorola and maybe they could imagine million opportunities better than billion opportunities 
Curse of Dimensionality
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Joyal has clearly explained the problems arising due to high dimensions and hence it has been selected as the best answer. Congratulations! Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 6 replies

 big data
 business analytics

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Block Diagrams
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Sourabh Nandi has provided a holistic view of block diagrams and hence is selected as the best answer. 4 replies

 design thinking
 system design

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Holy Trinity of Project Management
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Aritra Das Gupta and Joyal are the winners for this question for highlighting the interactions between the three constraints using various scenarios. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 
Interrelationship Diagram
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
The best answer to the question has been provided by Joyal and Sourabh Nandi. Congratulations to both of them! Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 
Morphological Matrix
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
All published answers are excellent and it is difficult to choose one over the other. All have highlighted the usage along with a unique example and hence all published answers are winners for this question! 6 replies

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 idea generation
 new product development

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Dunning Kruger Effect
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
While all the published answers are correct, the best answer has been provided by Sourabh Nandi for describing the effect, its causes and ways to overcome it and by Aritra Das Gupta for highlighting three methods that a supervisor can use. Prakash Mesta's answer is a must read for the linkage of Dunning Kruger effect with Lean Six Sigma. 
Economies of Scale vs Customization
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Premkumar T is the winner for this question for describing both the concepts and also providing examples of how the contradiction between economies of scale and customization can be managed. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 
"In God we trust, all others must bring data"  W. E. Deming

Value Stream Mapping Questions On Usage in Service
Mayank Gupta replied to Wengkit Cheong's topic in General Discussions
1. Soft skills and good professional relations can help you get the data. 2. This is how I would do it  I would model the longest branch as the main branch, however I will still capture the other various paths as well 3. Rework can be easily depicted using the rework symbol in a VSM. You will have to mention the % of rework Apart from the above, the following should help you reduce the time for launching a new product a. Change Management principles b. Identify the handoff points among the 12 departments. Most of the delays happen at handoffs. An 
Hello Andrew You may present your case basis the transaction error % (effectiveness or accuracy ratio). Alternatively, you may also simply look at the number of transaction errors on a daily/weekly/monthly basis. This should be done only if the total number of transactions are fixed. if the total transactions vary, then looking at standalone numbers might be misleading.

Difference Between Pareto Chart & Pie Chart
Mayank Gupta replied to krkeerthi111's topic in General Discussions
Hello Keerthi Both Pareto and Pie chart (in fact all graphs) are only data visualization tools. Having said that, each chart has a specific purpose Pareto chart  shows the rank order in the data (by sorting the data in descending order) Pie chart  shows the data as 'part of the whole pie' (data may not be sorted in descending order) Pareto's 80/20 rule is a prioritization rule and you may apply it to a pie chart as well (for that matter you may apply it to a bar chart as well). Another reason why a Pareto might be preferred is if th 
Six Sigma  Project Selection Matrix
Mayank Gupta replied to Kishan B.'s topic in Bench and Mark Cartoons
Hello Kishan Some guidelines 1. Objective is to improve the process timelines  Lean 2. Objective is to reduce the number of defects or improve quality  Six Sigma 3. Project is best suited for Lean Six Sigma approach if the cause and solution are unknown. If any or both of these are known, it is suitable for Kaizen 4. Relatively smaller improvements  Kaizen Apply the above filters and then use a project selection criteria to select one project from the many potential projects. 1 reply

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Andon
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
There are two best answers to this question. Sudhir Gayakwad and Sourabh Nandi are the joint winners. Congratulations to both. Mohamed Asif's answer is a must read to see how Andon is used in healthcare. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 9 replies

 lean management
 lean six sigma

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Queueing Theory
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Both the published answers have been selected as the best answer to this question. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 
Venn Diagram
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Sourabh Nandi has provided the best answer to this question by providing business applications of Venn Diagrams along with an example. Congratulations! 
Heijunka
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Sourabh Nandi has provided the best answer to this question for providing the different ways in which Heijunka can be implemented. Another very common tool used for implementing Heijunka is called a "Heijunka Box". Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 5 replies

 heijunka box
 lean management

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Design Thinking
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Meet Maheshwari has provided the best answer to this question by providing an example for divergent and convergent thinking. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 
Kubler Ross Change Curve
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Everyone has given great answers, however the best answer has been given by Raj Saxena for listing out what actions the organizations can take at each stage of the curve. Strongly recommended to read all answers. 9 replies

 change management
 kubler ross model

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Overall Equipment Effectiveness (OEE)
Mayank Gupta replied to Vishwadeep Khatri's question in We ask and you answer! The best answer wins.
Sudhir Gayakwad and Raj Saxena are the joint winners for this question. Also review the answer provided by Mr Venugopal R, Benchmark Six Sigma's inhouse expert. 10 replies

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 lean manufacturing
 overall equipment effectiveness

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