ROSS
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ROSS replied to the topic Regression as a screening tool in the forum General 12 years, 4 months ago
Hi:
I have found that using Stepwise Multiple Regression with all the X’s in the Model along with Two Factor Interactions of those X’s is a useful tool to begin the screen of multiple X’s (some of which may be colinear). Stepwise Regression is a natural way to identify & remove colinear X’s from the model. Hope this helps. Have a great day, Tony

ROSS replied to the topic Control Chart Questions in the forum Software/IT 12 years, 4 months ago
Hi Reinaldo:
I believe your question pertains to monitoring Key Process input variables that determine your Process Output. If this is the case, then I would monitor only those Key process Input Variables that significantly deterimine your Key process Output Variable. Typically, Multiple Regression Analysis or formal Design of Experiments are u…[Read more] 
ROSS replied to the topic Published Destructive Test Sampling Tables in the forum General 12 years, 7 months ago
That is not very helpful.

ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
no i am actually an instructor monitoring this board to see who is cheating… JUST KIDDING! No we are not in the same class or school.

ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
your calculation is correct.

ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
thank you so much that helped. Very much appreciated.
Tony 
ROSS replied to the topic NEED HELP FINDING THE UCL LCL in the forum Healthcare 12 years, 8 months ago
here is my email: [email protected] shoot me an email and we can take it from there. No we have different instructors. most likely a different school as well. thank you so much. I am at my zero hour..

ROSS replied to the topic NEED HELP FINDING THE UCL LCL in the forum Healthcare 12 years, 8 months ago
would you mind helping me out?

ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
god I am lost…..My last answer was 5 and 40 and it was wrong. I am confused on the below where “the .0879 and 7.525 don’t include the mean value”
by the way thank you very much for your help. I so need it 
ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
i think it is of the mean. I am coming up with .0879 and 7.5250
if it is from the the mean I am coming up with 0.4896 and 41.8974 
ROSS replied to the topic Can some one help me with Standard deviation in the forum Healthcare 12 years, 8 months ago
Yes a class project assignment.
The mean is 21.1935 . The standard deviation is 6.9013 . I am having trouble figuring out how to calculate the correct expected variation + or – 3 standard deviations from the mean. So far every answer I have given is wrong. The last hint from the instructor was: my mean is correct, my standard deviation is…[Read more] 
ROSS replied to the topic NEED HELP FINDING THE UCL LCL in the forum Healthcare 12 years, 8 months ago
It looks like we are doing the same health care project. Did you get an answer?

ROSS replied to the topic Six Sigma Tools .. Taguchi Loss fn. in the forum General 12 years, 9 months ago
During 6 sigma training, I present the concepts of Taguchi’s loss function to stress that, although inevitable, any variation is bad and has some resulting effect on customer satifaction and therefore cost of poor quality. The message is “never stop reducing variation if it is still possible within obvious commercial constraints”
I agree with…[Read more] 
ROSS replied to the topic Capacity calculation of a team in the forum General 12 years, 11 months ago
Calculating capacity is very easy once you know 2 things: Volume and Productivity.
Here’s a simple equation:
P(roductivity)= V(olume)/TM (Team Member)*H(ours)
The first step is know the maximum hourly productive of the Team Members (TM), (e.g.) if TM 1 has an hrly productivity of 8, TM 2 is 6, and TM 3 is 4 – then (assuming that each TM is…[Read more] 
ROSS replied to the topic Loan Processing Cycle Time (Mortgage) in the forum Finance 13 years ago
I am also interested in receiving a copy of the storyboard for the mortage processing cycle … would greatly appreciate if you could send to me by email also.
Thanks

ROSS replied to the topic Cpk / Ppk units of measure in the forum General 13 years, 3 months ago
I agree with Daves point. There is a nonlinear relationaship between dBm and mW and the distribution of the data in each type of unit should be explored to ensure normality by transformation if necessary. At the end of the day “which unit of measure is most important to the customer – dBm of mV”? That is the one that should be used.

ROSS replied to the topic Calculating Sigma from standard deviation in the forum General 13 years, 6 months ago
I have the customer specs already in my database. I just need a matmatical equation that I can use to determine the sigma value using the specs as well as the deviation value. Any idea?

ROSS replied to the topic Achieving 6 Sigma in the forum General 13 years, 6 months ago
I agree that at the “company” level there are no Six Sigma performers. However, if you look at processes, there are many.
One of the classic examples is aircraft safety as defined by number of passenger flights without casualties vs total flights taken. This process is much higher than Six Sigma, and we wouldn’t tolerate much less. Baggage ha…[Read more] 
ROSS replied to the topic Oldest known reference to Cost of Poor Quality? in the forum General 13 years, 6 months ago
Here is an older example:
Suppliers: Cain, Abel
Customer: God
Specification: Animal offering (blood sacrifice)
Customer received from Cain: Fruit of the ground
Customer received from Abel: Animal offering
Result: Abel’s offering accepted, Cain’s offering rejected
COPQ: Jealousy–> murder–> Cain cursed by God
Lesson: Know your…[Read more] 
ROSS replied to the topic Friday Challenge – Six Sigma in Six Words in the forum General 13 years, 7 months ago
Proven datadriven continuous improvement methodology.
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