newbie

Nececitas hablar con tu instructor de seis sigma de tu certificacion.  Usualmente, tienes que hacer un projecto y presentar un examen. Pero es la responsibilidad de tu instructor para explicarte lo que nececitas para certificar…depende en la programa.

Hola Gabriel,
No se cuando puedes consequir material para diseno de experimentos en espanol en linea o aqui, pero hay muchos libros de DOE en espanol en Amazon.com, por ejemplo:
Inferencia Estadistica y Diseno de Experimentos (Spanish Edition) by Roberto Mariano Garcia (Paperback – May 2004)

5 new from $56.62
2 used from $125.74
 
Buen…[Read more]

An A3 approach works well.  Keep it largely graphical/pictoral and customize it to your audience.  Get as much feedback as possible (and incorporate it where you can obviously) from the critical stakeholders / sponsor during its creation.  Good luck.

irrelevant

You want to influence behavior, which can be nicely defined using the following 5 principles of influence:

Principle – Do the right thing based on reg, data, policy, or ethic
Expert – those that know the work best should design it 
Referrent – People like you…your a swell human being
Coercive – You get give people things and take them…[Read more]

Process capability has no relationship to process stability.  Stable processes are those that contain common-cause only variation. This is evidenced by a control chart that depicts all data points randomly dispersed around the mean and within the control limits.  If you are using continuous data, you should be using a Variability Chart with your X…[Read more]

Wow.

Thanks Doc!!

Hey Doc,
So what do you reccomend in terms of baselining the capability of a given process?  I have followed the threads as to the weakness of sigma, but don’t recall the solution (if one was ever provided)….What are your reccomendations for a metric?  Thanks!!

That was excellent!  But could you explain the comment:  Assuming normally distributed performance in statistical control, you might as well be randomly handing out $100 bills
Thanks!

Go back to the charter and clarify what the project effort is about and the primary metric.  This will tell you what information is needed and thus, the tool suited for that purpose.  If you are looking at reducing time or cost, then a VSM current state would be a good choice.  If you want to highlight decision points and the people or de…[Read more]

It is a good question.  I would say you can report process capability in any of the aforementioned forms, and there are numerous tables out there that practicioners use to do just that. Just be consistant in your methods. 
I think the advantage to sigma/Z score (if there is one) is that it is used when dealing with continuous data, where you…[Read more]

You will usually have multiple customers who consume one or more of the process outputs.  One approach: 
Use your SIPOC/COPIS with “$100 Dollar Exercise” and the Leadership Team to prioritize either:  outputs or customers.  Now pick the one that makes the most sense from a business perspective and work from there.  Good luck.

It is not a measure that falls into a “pass/fail” classification, but is useful due to its relativity to both the process mean, and when used as a comparison measure.  Although I have never found any hard information on this, I have heard a rule of thumb that has worked well for me:  A COV above 10% will point toward potential issues with p…[Read more]

Hey Doc,
I assume you transformed it and/or ran the ANOVA / Moods Median for the helluva it….anything interesting result?
With 93% of the data being zero, I assume your data is counting  occurances of some event in a given time period/sample area  (ie 93% of the time, there is no occurance of a given event).  
If so, would it be pra…[Read more]

Hoshin Planning, Balanced Scorcard, Annual Reviews, etc….Determining through data where the organization is underperforming is where you want to be in terms of project identification and selection…..good luck.

I believe it is referring to the null hypothesis which would state that there is no statistical difference (ie the difference is 0.0) between the two porportions, while the alternate hypothesis states there is a statistical difference between the two proportions (ie Alternative: not equal).
Zero refers to no difference.  Not equal refers to a…[Read more]

A couple ideas.  First, running an ANOVA on non-normal data isn’t necessarily an incorrect approach.  It is largely robust to this assumption, and depending on the number of distinct categories you find in your data set, an argument could be made for it being a valid approach.  If not, you could always investigate transforming the data (ie Box Cox…[Read more]

Thanks everybody!  Always appreciated.

So:
Lets say I have two product variants in a given value stream – A & B,  a takt time of 2 minutes, and a production monument – acting as a bottleneck – that has an effective machine cycle time of 4 minutes.  By adding a supermarket pull system for A, B  – I have done the following:

Enabled the value stream to produce to Takt
Reduced th…[Read more]