iSixSigma

Jonathon Andell

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  • It just isn’t a complete thread without people calling each other morons. Reminds me of some of the playground arguments from my first childhood.The Breyfogle-Wheeler debate was a lot of fun to watch. An odd mix of contradictory dogmas, selective simulations, and occasional bursts of violent agreement. Reminds me of a decades-old issue of “Quality…[Read more]

  • It’s always entertaining reading this forum, especially when the technical debate derails and name-calling kicks in.For what It’s worth, I have found Darth and Robert Butler to have an excellent grasp of what works and what doesn’t.I admit that my statistical credentials fall below some on this list, but I also have been in the game for 20+ years.…[Read more]

  • If it’s not too late: do you have any idea how a self-employed person might become a trainer for a stimulus-funded class? 10 years, 6 months ago

  • I admit to being obtuse – what was the underlying message there?

  • I got a sneak peek at some Shainin materials once, and I’m not convinced that they’re far from what Bhote described. He somehow was a master at protecting some of his stuff as proprietary material, and some of the proprietary stuff looked OK.Everybody alive can shoot valid holes in an overall methodology. That includes Lean, Six Sigma, Taguchi,…[Read more]

  • I was being sarcastic – I don’t anticipate anything worse than an ugly presidential campaign for 2012.

  • My best prediction is that 2012 will arrive a year after 2011 does. The biggest disaster of the year will be mourned by whichever side of the congressional aisle is not represented in the White House.

  • Based on the message thread, it’s not certain who really posted this original message. If it wasn’t “Darth” then you should post under your own ID.Keki Bhote wrote a book called “World Class Quality,” in which he uber-hypes the alleged superiority of Dorian Shainin’s methods. If you can get past the songs of praise, he provides decent descriptions…[Read more]

  • Jonathon Andell replied to the topic p-value in the forum General 10 years, 7 months ago

    Correct. Another alternative is to enter the F (and the two degrees of freedom values) into any of a variety of software packages – Minitab, Excel, JMP, and the many statistical add-ons for Excel all have such a function.

  • Jonathon Andell replied to the topic Control charts in the forum General 10 years, 8 months ago

    abc, I am concerned whether this data fits with an X-Bar chart. There are a number of mis-matches: – Your “range” can be only an integer from 0 to 4. There really should be more “shades of gray” available.- Your “n” for subgroups makes me wonder whether you are using R-bar or S for setting control limits.- Using this kind of scale to track…[Read more]

  • Jonathon Andell replied to the topic Control charts in the forum General 10 years, 8 months ago

    Thanks for the acronym tutelage. I hope you are having a good year. It’s been a long time since I enjoyed working with you.Your response makes me wonder about the sub-grouping scheme even more. Questions for the original poster to this discussion board:1. How many surveys per week?
    2. What subgroup size do you use to compute control limits?
    3.…[Read more]

  • Jonathon Andell replied to the topic Pull System in the forum General 10 years, 8 months ago

    In less technical, albeit overly simplified terms:If a process step is faster than a downstream step:Push systems crank the upstream steps as fast as they can, and inventory builds up between the steps.Pull systems allow the upstream step to produce only what the downstream steps can handle, usually by some “pull” signal to authorize increments of…[Read more]

  • Jonathon Andell replied to the topic World-Class 5S in the forum General 10 years, 8 months ago

    I know of a plant in Kalamzoo that does all aspects of Lean rather well. They really are beyond mere 5S. If you are interested, send your email address in a reply and I’ll contact you off line.

  • Jonathon Andell replied to the topic Control charts in the forum General 10 years, 8 months ago

    What is CSAT? Your sampling and subgrouping schemes may warrant further consideration – if you have significant sources of variation within your subgroups, the chosen chart may be hiding crucial information. Can you tell us a little more about your data?

  • The customer of an academic process, like any other process, depends on which process you are observing. The customers of an enrollment process can be the students AND the faculty AND the registrar’s office AND… Similarly, the customers of an individual class are more aligned to the student, or perhaps the employer who is paying the student’s…[Read more]

  • Not sure about a hypothesis test, but I was able to generate a decent probability plot. The steps were: 1. Use a pivot table in Excel to count the number of occurrences of each data value.2. Copy the columns into Minitab.3. Use the menu: Stats > Reliability/Survival > Distribution Analysis (Right Censoring) > Distribution ID Plot.…[Read more]

  • I have been involved in DFSS as a process design activity. I facilitated a hospital team to develop an internal supply chain for medical supplies. We developed and implemented 12 sub-processes.The project resulted in presentations at the ASQ Six Sigma Conference and the WCQI, both in 2006. The WCQI paper was entitled “Data Driven Decision Making…[Read more]

  • If you have a Pareto on the open-ended questions, go with the top 5. Otherwise use pairwise of AHP to select.

  • The data is only binary if you convert perfectly good continuous data into vastly inferior discrete (“binary”) data. You could consider some time series models, or perhaps some regression analysis if you also have potential X-variables (don’t forget higher0order terms and “lag” functions). Either way, never make the mistake of degrading continuous…[Read more]

  • Jonathon Andell replied to the topic hi in the forum General 10 years, 11 months ago

    Hi Robert:Is the second option a Box-Behnken design? Does it use a center point (0, 0, 0)?Thanks!J

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