Jump to content
  • forum (2).png

  • THE OPEN QUESTION on the forum right now is on Yamazumi Chart. This is part of our TWO QUESTIONS PER WEEK initiative. One question is launched on Tuesday and the other on Friday, both at 5 PM IST. Best answers are recognized well on this most active Lean Six Sigma forum. (Benchmark Six Sigma Forum ranks first on Google Search based on popularity) 

     

    Last question responded with the best response can be seen here - Test for Equal Variances. All questions can be seen here. The entire Dictionary of Business Excellence terms is here.

     

  •  

     

    1. High value Workshops - Our Corporate Workshops offered across the World can be seen here and the Open Enrollment Workshops (can be signed up from anywhere in the world) can be seen here
    2. If you are going through our online practice project, you can view details and updates here
    3. Questions? - For Industry specific questions or for general questions w.r.t Lean Six Sigma (or the broader domain of Business Excellence), please use the forums below. 

     

     

Forums

  1. Learning Business Excellence and Lean Six Sigma

    1. 529
      posts
    2. 1.5k
      posts
    3. 1.9k
      posts
    4. Bench and Mark Cartoons

      Bench is on the bench. Mark is on the mark. With a series of cartoons, see how Bench and Mark behave differently in approach towards solving management problems. Learn why Mark is successful when Bench is not. New toon appears every Wednesday. Discussions are open against each cartoon. 

       

       

      Bench and Mark Dual.PNG

       

       

      65
      posts
    5. Debate : For or Against

      Debate area for Excellence Ambassadors 

      199
      posts
  2. Six Sigma Practice Project for Benchmark Participants

    1. Six Sigma Practice Project - all updates

      The story of Six Sigma Practice Projects as it is progressing. Check back here for the latus status. Click on the title to see latest status. 

      8
      posts
    2. Enrolling for Practice Project

      Describes process for enrolling in practice project

      3
      posts
    3. Did not get email from Academy?

      What to do if you do not get an email from Academy after filling registration form within Progressive Group? 

      1
      post
    4. Working with Phases of Practice Project

      Guidance on how to address issues found while working with phases of practice project. 

      1
      post
    5. Registering and participating in webinars

      Guidelines for participating in webinars and accessing the recording later

      1
      post
  3. Know about Benchmark Six Sigma

    1. 2.2k
      posts
  4. Recreation and Discussion Center

    1. Debate Halls

      Debates on process improvement thoughts, articles, links, news, in addition to views on what scholars & authors say.

       

      debate catapult medieval2 launching.png

      259
      posts
    2. Fun and Trivia

      Jokes, Fun ideas, Idle thoughts - All come here

       

      Fun.png

      127
      posts
    3. Benchmark Six Sigma Cartoon Strip

      Cartoon strip co-created by the community. Submit your ideas based on characters. If approved, the strip shall be published with your name.

      20
      posts
    4. We ask and you answer! The best answer wins.

      Questions need to be answered in a limited time and use a specific format. The answers are showcased with the definition of the term in the World's Best Business Excellence Dictionary. 

      4.2k
      posts
  5. Discussions related to Training

    1. 151
      posts
    2. 181
      posts
    3. Master Black Belt and its competencies

      The Business Excellence MBB is globally recognized and carries several competencies within it. You may go for 1 or 2 competencies at a time instead of trying MBB at one go.  

      20
      posts
    4. Refresh your basics on data analysis

      This free basic maths refresher subgroup has been created for Six Sigma enthusiasts. Please feel free to reply with topic specific application examples or queries.

      55
      posts
  6. Benchmark Six Sigma Participants Support Forum

    1. Post Workshops Guidelines

      Includes discussions, success stories, advice, support, tips, and ideas.

      • No posts here yet
    2. Career & Project Discussions

      Jobs available, jobs wanted, online project support

      4
      posts
    3. 4
      posts
  7. Coronavirus Discussions

    1. Coronavirus forecasts

      Forecasts to see if the trend is likely to change and to review how we are performing against Coronavirus

      40
      posts
  • Most Solved

  • Recent Achievements

    • Hirak Raval earned a badge
      Week One Done
    • Bhavish earned a badge
      Week One Done
    • Devesh Gupte earned a badge
      Week One Done
    • Devesh Gupte earned a badge
      One Month Later
    • Shwetha Gl earned a badge
      Week One Done
    • Pankaj Nagla earned a badge
      Week One Done
    • Pankaj Nagla earned a badge
      One Month Later
    • kriti shah earned a badge
      Week One Done
    • kriti shah earned a badge
      One Month Later
    • sanchitar17 earned a badge
      Week One Done
  • Who's Online (See full list)

    • There are no registered users currently online
  • Member Statistics

    • Total Members
      53,955
    • Most Online
      888

    Newest Member
    Aakar Gupte
    Joined
  • Forum Statistics

    • Total Topics
      3k
    • Total Posts
      15.1k
  • Gallery Statistics

    • Images
      2.3k
    • Comments
      43
    • Albums
      73

  • ALL TIME GB TOP SCORERS

     

    Name

    Score (%)

    City/Year

     
     

    Purvi Gupta

    100

    Del 2019

     

    Bhawana Sethi

    100

    Del 2015

     

    Adyan Prabhakaran

    100

    Hyd 2014

     

    Thirumoorthi.M

    99

    Chn 2019

     

    Sneha Vivek More

    99

    Mum 2019

     

    Sumita Maiti

    99

    Kol 2017

     

    Vidula Valavalkar

    99

    Hyd 2014

     

    Vishal Tillu

    99

    Mum 2014

     

    Yashwanth J G

    99

    Bng 2013

     

    Jyothi Kanuri

    99

    Hyd 2013

     

    Vrajesh Parekh

    99

    Mum 2013

     

    Gnanasekaran D

    99

    Chn 2012

     

    Benoy Ramachandran

    99

    Chn 2012

     

     

    Muthu Naveen S

    99

    Mum 2012

     

    Ketan Trivedi

    99

    Mum 2012

     

    Piyush Mangal

    99

    Del 2011

     

    Sourav Thakur

    99

    Del 2011

     

    Tushar Chaudhari

    99

    Mum 2011

     

    Komal Bansal

    99

    Mum 2011

     

    Parag Suresh Kamble

    99

    Mum 2011

     

    Ritik Gupta

    99

    Pun 2011

     

    Amit Kumar Makkar

    99

    Del 2010

     

    Shaifali Singh

    99

    Del 2010

     

    Clarence Wong

    99

    Hyd 2010

     

    Devendra Singh Baghel

    99

    Hyd 2010

     

    Varun Hemrajani

    99

    Pun 2010

     
         

    Here is the complete list of all time Lean Six Sigma Green Belt Top Scorers

  • ALL TIME BB TOP SCORERS

     

    Name

    Score (%)

    City/Year

     
     

    Kunal Obhrai

    98

    Del 2019

     

    Mahesh P K

    98

    Bng 2017

     

    Balaji M

    97

    Bng 2017

     

    Rohit Arora

    97

    Bng 2017

     

    Amit Kumar Makkar

    97

    Del 2015

     

    Kanishk Jain

    97

    Bng 2014

     

    Akshay Khatri

    97

    Del 2013

     

    Rahul Kumar

    97

    Mum 2013

     

    Sairam Balakrishnan

    97

    Hyd 2011

     

    Ashish Sharma

    96

    Pun 2019

     

    Sunil M. Bhat

    96

    Bng 2017

     

    Rohan Chavali

    96

    Del 2017

     

    Apoorve Arya

    96

    Mum 2014

     

    Sandeep P.R. 

    96

    Chn 2013

     

    Awojide Martins Olabisi

    95

    Mum 2020

     

    Zeshan Abubacker

    95

    Bng 2019

     

    Kumar Kaushal

    95

    Del 2019

     

    Vishal Kanojia

    95

    Hyd 2019

     

    Swati Malhotra

    95

    Mum 2019

     

    Nithin Sandhyala

    95

    Bng 2017

     

    Abhishek Arora

    95

    Del 2017

     

    Satishkumar Jain

    95

    Mum 2017

     

    Atirakshit Bhatt

    95

    Mum 2017

     

    Narendra Anil Murdeshwar

    95

    Pun 2017

     

    Rupinder Kaur Narang

    95

    Del 2016

     

    S Sujay Kumar

    95

    Mum 2016

     

    Kuljinder Kaur

    95

    Del 2015

     

    Vetrivendhan K P

    95

    Bng 2014

     

    Sunil Bissa

    95

    Chn 2013

     

    Mayank Gupta

    95

    Pun 2011

     

    Here is the complete list of all time Lean Six Sigma Black Belt Top Scorers

  • Posts

    • This question is amongst one of the many misunderstood concepts in Lean Six Sigma. The question particularly asked for tests to compare variances for more than 2 populations, however, there were many responses that described ANOVA and other similar methods. These methods are used to compare the central tendencies (mean or median) of the multiple populations. They do not compare the variances (spread of the data).    From all the approved responses, the best response is from Afzal. Well done!   P.S. - responses that detailed ANOVA and other methods have not been approved as they are incorrect responses.  
    • There are multiple statistical test are available to compare the variance of different populations. Below are some of the test:   F test: This is suitable in case the populations are normally distributed or near to that. This is a parametric test and used for comparing 2 populations variance.   Bartlett's test : Like F test , this is also used if the populations are normally distributed or near to that. This is also a parametric test and can be used for comparing more than 2 populations variance.   Levene’s Test: This is again a test for variance comparison and can be used for both normal and non-normal data.  This can be used for two or more than two population samples.   These test are often used as part of mean comparison test wherever we have assumed equal variance for the population samples. For multiple comparisons in these test , we have individual and Simultaneous Confidence interval.  Individual confidence level will show percentage of confidence that the true population parameter for that population will lie in the Confidence interval. Simultaneous Confidence interval is derived from the individual confidence intervals of multiple populations. It can be interpreted as % of confidence that the entire set of confidence intervals includes the true population standard deviations for all groups.
    • There 2 tests available to compare variances for more than 2 populations, namely:   Bartlett's test of variance – You can use this test If your sample comes from normally distributed data. In other words, It is used to test the variances are equal for all the samples drawn. It checks that the assumption of equal variances is true before using certain statistical tests like the One-Way ANOVA etc.,. It’s used only when you’re fairly certain that your data comes from a normal distribution.  Levene's test – This is an alternate to Bartlett’s test when the sample comes from non-normal data   Concept of confidence intervals (CI) :   The population variance gives an indication of how the data set is  spread out and  it is typically impossible to know exact population parameter(variance).for this reason, we use a topic in statistics called confidence intervals.. It refers that the probability that a population parameter will fall between a set of values for a certain proportion of times. For a variance from a normal distribution with unknown mean, a two-sided, 100(1 - α)% confidence interval is calculated and for two-sided intervals, the distance from the variance to each of the limits is different. Thus, instead of stating the distance to the limits we state the width of the interval
    • Q 438. What is a Yamazumi chart? How can it help improve the process efficiency? Explain using an example   Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to the latest question open till the next Tuesday/ Friday evening 5 PM as per Indian Standard Time. Questions launched on Tuesdays are open till Friday and questions launched on Friday are open till Tuesday.  When you respond to this question, your answer will not be visible till it is reviewed. Only non-plagiarised (plagiarism below 5-10%) responses will be approved. If you have doubts about plagiarism, please check your answer with a plagiarism checker tool like https://smallseotools.com/plagiarism-checker/ before submitting.  The best answer is always shown at the top among responses and the author finds honorable mention in our Business Excellence dictionary at https://www.benchmarksixsigma.com/forum/business-excellence-dictionary-glossary/ along with the related term
    • To compare 1-1 variance, we use F-Test or Levene’s Test. To compare variances for 2 or more populations, we use Levene's test or Bartlett's test. If we are sure data are normally distributed, Bartlett's test might have greater statistical power. The hypothesis testing is performed to assess variance of at least 1 group is significantly different from the rest or if all have equal variance. The individual confidence level indicates how confident we can be that an individual confidence interval contains the population variance of that specific group. However, because there are multiple confidence intervals in the set, you can be only 95% confident that all the intervals contain the true values. Each confidence interval may be a range of likely values for Standard deviation of the corresponding population. To maintain the simultaneous confidence level, the Bonferroni confidence intervals are adjusted. Controlling the simultaneous confidence level is particularly important when multiple confidence intervals are assessed. If the simultaneous confidence level is not controlled, the chance that at least one confidence interval does not contain the true standard deviation increases with the number of confidence intervals.
×
×
  • Create New...