Vishwadeep Khatri
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Everything posted by Vishwadeep Khatri
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Good share. It also has a saving calculator that allows intelligent visualization of savings. http://www.cisco.com/web/applicat/TPcalcul/home.html
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Interesting and very valid question. Subject matter experts may like to decide what is a good sub-grouping logic in the process. If hourly sub groups provide big between group variation (as compared to within group variation), then it should be taken as hourly. More comments welcome.
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Good article. And agreed - Unfavorable randomization may need tweaking. Thanks for posting this.
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Though this question was not directed to me, let me add a quick response. You use Chi Square test primarily to test dependence or independence. In other words, (using an example) you may wish to know whether the defectives % is same for all shifts. If the test disproves the null, you conclude that defective % are different. In other words - defective % DOES depend on shift or defective % is not INDEPENDENT of shift.
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Standard VSM does not have scope for decision boxes as it is done at a macro level to primarily show FLOW of material, information, communication. Use wait time of one invoice from the moment it enters the queue till it is processed. Considering an average queue length of 100, each invoice becomes 100th first before becoming 99th or 3rd in the queue. Depends - Ideally you may do detailing on an area that requires action. Hope this helps. More comments welcome.
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Just because Motorola decided to call it Six Sigma and not "5" or "7", as they thought Six is just the right goal. Also, the focus initially was primarily on variation reduction, which later shifted to a full fledged management approach.
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Good to see the suggestions and comments. There is a need to finalize a metric. QFD is relevant and could be used here. To build the discussion back to Dina's focus( my feeling is that Dina needs some direction to identify a measure that relates closely to pain), may I ask everyone for ideas on CTQ options that we may suggest Dina to consider ?
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Hi Krishna, What you have highlighted is an important topic and I am glad you raised it here. One way of working with this situation is Try to categorize defects as critical, major and minor. Define the requirement for each type of defect. For example zero defect is the expectation for critical defects, while up to 3% minor defects may be considered acceptable. Sigma level can be separately calculated for each category of defect, if you wish. Another option is Assign weights to each category of defect. Calculate weighted scores (similar to a quality score) Fix a weighted improvement goal for the process. Hope this answers your question. Do let me know if you have further queries. Opinions from others welcome . Note - Probably the CTQ you would like to consider would be accuracy (if you use first option) and score (if you use second).
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Interesting situation, Mayank. Output/time is the right metric. However, it seems the question is that of reliability of data. One method, though imperfect, is where the computer throws random number at the agent every few minutes. If the agent types it quickly, he gets a pass. If he fails to enter in a few seconds, it is a fail. You may allow some fails if total time is long. The method only checks that the agent is right there! May still miss whether he was really working on the process.
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Hi Manik, Very important question for service sector professionals. Here is my answer - Anything that needs improvement should be measured first. If something is critical, you can surely find methods to measure it. In service sector - Dissatisfaction is measured by poor referral, poor repeat sales, or loss of customers. Employee motivation is measured by absenteeism, productivity, attrition. Success of social activity is measured by number of posts, new friends and "likes" Taste of liquor is measured by scores given by experts (with their tongue as measuring device) Quality of service is measured through carefully designed feedback forms. Success of schemes is measured by increase in sales. Success of email campaign is measured by clicks. Success of outbound sales is measured by various conversion rates - cold contact to leads, leads to hot leads, hot leads to accounts, accounts to up-sell I presume you got the idea. Let us play a game - I suggest you and other viewers to challenge the creativity/ingenuity of this community by providing situations where measures are tough to devise.
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Important observation there Mayank and your example fits perfectly here. Let us say a specific small difference (X) in proportions (or averages/medians) when comparing two populations (based on hypothesis test done with large sample data) is found to be significant. The same difference (X) may be absolutely insignificant when you take smaller sample sizes from the same two populations. This means if you work with insufficient sample sizes, small real differences in populations cannot be detected. Large sample sizes provide you with higher power (ability to detect small differences if they exist in populations) Views, anyone?
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Hi Sumit, It seems from your post that the reasons are known "below average aptitude or untrained Medical transcribers (both QA & editors) are responsible" If the cause is known, one can focus on finding solutions (using I phase techniques of DMAIC). A Six Sigma project (DMAIC) may not be needed, however Six Sigma techniques (as presented in I phase and C phase) can be used.
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I have compiled quotes for Six Sigma beginners and my comments are in green. Feel free to change the green text and use wherever you like. However, the black text is protected by the wise men who developed them. Here you go.. "It's better to be prepared for an opportunity and not have one than to have an opportunity and not be prepared" - Whitney Young Jr *There is no better way to prepare than to learn the world best techniques in decision making "It does not matter where you are coming from. All that matters is where you are going" - Brian Tracy *Chances are - you may not be going anywhere with the old ways. "The right place and the right time is here and now" - Michelle Ustaszeski *Absolutely! "The more you seek security, the less of it you have, but the more you seek opportunity, the more likely it is that you will achieve the security you desire" - Brian Tracy *Taking this further - when you succeed with one opportunity, you get loads of them. "It is not necessary to change. Survival is not mandatory" - W. Edwards Deming *Bow. "The greater the difficulty the more glory in surmounting it. Skilful pilots gain their reputation from storms and tempests." - Epictetus *The BHAG is what you need. The big hairy audacious goals. Do not set unless you are prepared well to tackle them. "Big jobs go to the men who prove their ability to outgrow small ones." - Ralph Waldo Emerson *Undoubtedly "Your life changes the moment you make a new, congruent, and committed decision." - Robbins, Anthony *Make it now "Without a sense of urgency, desire loses its value." - Jim Rohn *Do it now "If you are not willing to risk the unusual, you will have to settle for the ordinary"- Jim Rohn "You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of." - Jim Rohn *Rohn says the same thing in so many ways "We can't solve problems by using the same kind of thinking we used when we created them." - Albert Einstein *Change the thought process. Welcome to the Six Sigma world. "The larger the island of knowledge, the longer the shoreline of wonder." - Ralph W. Sockman *After so many years with these techniques the wonders have not ended for me yet "Intellectuals solve problems; geniuses prevent them." - Albert Einstein *I can only take a bow on this. "First they ignore you, then they laugh at you, then they fight you, then you win." - Mahatma Gandhi *You need to ensure that the first three stages do not get extended too much "One that desires to excel should endeavor in those things that are in themselves most excellent." - Epictetus *Get all the ammunition that is excellent in itself. Even if you miss a few goals, it will not matter. As the jackpots you hit shall reap great rewards for you.
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I have compiled quotes for Six Sigma beginners and my comments are in green. Feel free to change the green text and use wherever you like. However, the black text is protected by the wise men who developed them. Here you go.. "It's better to be prepared for an opportunity and not have one, than to have an opportunity and not be prepared" - Whitney Young Jr *There is no better way to prepare than to learn the world best techniques in decision making "It does not matter where you are coming from. All that matters is where you are going" - Brian Tracy *Chances are - you may not be going anywhere with the old ways. "The right place and the right time is here and now" - Michelle Ustaszeski *Absolutely! "The more you seek security, the less of it you have, but the more you seek opportunity, the more likely it is that you will achieve the security you desire" - Brian Tracy *Taking this further - when you succeed with one opportunity, you get loads of them. "It is not necessary to change. Survival is not mandatory" - W. Edwards Deming *Bow. "The greater the difficulty the more glory in surmounting it. Skilful pilots gain their reputation from storms and tempests." - Epictetus *The BHAG is what you need. The big hairy audacious goals. Do not set unless you are prepared well to tackle them. "Big jobs go to the men who prove their ability to outgrow small ones." - Ralph Waldo Emerson *Undoubtedly "Your life changes the moment you make a new, congruent, and committed decision." - Robbins, Anthony *Make it now "Without a sense of urgency, desire loses its value." - Jim Rohn *Do it now "If you are not willing to risk the unusual, you will have to settle for the ordinary"- Jim Rohn "You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of." - Jim Rohn *Rohn says same thing in so many ways "We can't solve problems by using the same kind of thinking we used when we created them." - Albert Einstein *Change the thought process. Welcome to the Six Sigma world. "The larger the island of knowledge, the longer the shoreline of wonder." - Ralph W. Sockman *After so many years with these techniques the wonders have not ended for me yet "Intellectuals solve problems; geniuses prevent them." - Albert Einstein *I can only take a bow on this. "First they ignore you, then they laugh at you, then they fight you, then you win." - Mahatma Gandhi *You need to ensure that the first three stages do not get extended too much "One that desires to excel should endeavor in those things that are in themselves most excellent." - Epictetus *Get all the ammunition that is excellent in itself. Even if you miss a few goals, it will not matter. As the jackpots you hit shall reap great rewards for you.
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We created a survey in 2009 and ran it for some time. I thought it is a good idea to make it live again to gather more responses. The objective of the survey is mentioned in the heading of this post. If you wish to participate, the survey link is here - http://www.surveygizmo.com/s/153419/six-sigma-career-growth-survey If you wish to see results, the links are here. People who have undergone training recently responded as - Click here to see the report People who went through Six Sigma training and applied it partly responded as - Click here to see the report Experienced Six Sigma professional responded as - Click here to see this report These reports get updated as people fill up more surveys using the link at the top. Feel free to discuss more on this subject by replying to this post.
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Agreed Arup. Another example - If I use a simple mistake proofing device like a electronic shut down circuit that does not allow high voltage to affect my costly electronic device, I have used common sense and affected zero defect. Here, I have not used Six Sigma methodology but used one of the concepts (many people use such a concept). I may have used Six Sigma philosophy or concept but cannot (should not) be called a Six Sigma practitioner on the virtue of the performance excellence achieved.
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If the p value is higher than the acceptable type I error, it only means that you do not have enough evidence to be able to reject null hypothesis. It really does not mean that null is true. Those who have not studied hypothesis tests, shall not be able to touch the topic (well, this is understandable). However, those who have gone through a Green Belt or a Black training may like to discuss and comment here. Please feel free to explain with example.
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Two major occasions - You fail miserably. Your competitor succeeds spectacularly. It looks to me that the second reason has bigger and profound impact on individuals and groups - even more than the first one. Have a look at this article for a research paper on the subject. Feel free to air your views.
