• Chebbi became a registered member 1 hour, 3 minutes ago

  • You can add squares and do proper statistics such as ANOVA, etc. using sums of squares.

  • Change in the culture is a slow process which required change in the way employees perceive their own work and its significance in achieving organizational goal.

    In order to initiate the cultural change, one needs to clearly state the objective and expected benefits of the change to the top management and post getting the buy-in from them, it…[Read more]

  • Luis Negron became a registered member 1 day ago

  • The main difference between Mean Absolute Deviation (calculated by taking the absolute value of difference around mean) and standard deviation (calculated by squaring the differences and then adding them up and finally taking the Square Root) is that Standard Deviation gives more weightage to the extreme value and hence is considered a better…[Read more]

  • Alessandro Godio became a registered member 1 day, 8 hours ago

  • I am attempting to change the cultural mindset that LSS is a “management” function only. The biggest problem I am running into is that my performance by job type is already above average. For example, the min time for a job is 15 min (.25) and the max is 4 hours. Looking at my stats for the first quarter of 2015, I am averaging a 1.8 for clearing…[Read more]

  • I did a quick check of your data this morning – one way ANOVA with Bonferroni corrections for multiple comparisons says all three groups are significantly different from one another. In case you are needlessly wringing your forehead about the fact that the data fails normality (this is not an issue but some people insist it is) the Kruskal-Wallis…[Read more]

  • Amit Kumar Ojha changed their profile picture 2 days, 6 hours ago

  • I agree with CFB.
    The most important point in six sigma project is to clearly identify the scope of the process based upon which one can easily identify the customer.
    As an example, let us take an ‘Appraisal’ process of an organization. Let is consider that the scope includes all the full time employees who have worked more than a year.
    In this…[Read more]

  • Amit Kumar Ojha became a registered member 2 days, 7 hours ago

  • Don Hutchcraft’s profile was updated 2 days, 14 hours ago

  • Janet Hunzinger became a registered member 2 days, 21 hours ago

  • JB replied to the topic Who Is the Customer? in the forum General 3 days, 2 hours ago

    There are internal and external customers. Normally, that is a topic covered in LSS training. Every process is a series of supplier – customer relationships, inputs and outputs in a chain with hopefully well defined requirements and measurements at critical points.

    If an internal customer is requiring something that is non-value added to the…[Read more]

  • To do the one-way ANOVA in Minitab you need to first have your data stacked. That means, all the Y (outcome data) in one row, and coded values for your X’s (operator) in another column. Go to Data>>Stack>>Stack Columns. Then, after the data is stacked, Stat>>ANOVA>>One-way.

    Minitab help can walk you through both stacking the data, and the…[Read more]

  • Chris Seider replied to the topic Who Is the Customer? in the forum General 3 days, 2 hours ago

    The challenge with internal business practices is that a customer isn’t paying the bill for the work being done so it violates definition of value added.

    However, one can analyze the process and see where transactions are transformed and call them business necessary (a middle ground) or go ahead and call them value added but realize in the…[Read more]

  • Jill Anderson became a registered member 3 days, 2 hours ago

  • The quickest and simplest approach would be a one way ANOVA. If the overall p-value is significant then you could consider a series of pairwise comparisons of means with either a Bonferroni or a Tukey-Kramer adjustment for multiple comparisons. As to how you would set this up in Minitab – I have no idea – perhaps someone else can help.

    One…[Read more]

  • Raouf Selwaness became a registered member 3 days, 15 hours ago

  • @jonic — Although the iSixSigma audience is willing to help, they are not here to do your work for you. How do you think the problem can/should be solved? If you think you’re doing something wrong, why do you think that? The more details you provide, the more likely you are to get a response.

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