sumant

Hi Priyanku,
Though the output of the estimation and prediction is more or less same, both are different tools. While estimation models used at the start of the projects, prediction models are used to predict for the next phases based on the completed phases of life cycle. Basically for in-process prediction, prediction models are being u…[Read more]

You need not to convert the data to discrete. Better to calculate process capability with continuous data. Use Cp and Cpk for process capability calculation.
One suggestion: In this exampe process tolerance (USL – LSL) is only 0.6. but least count in scale is 0.1, if you can change your least count to0 .01, it will give you better result. If you…[Read more]

GKP,
Here is the relation between sigma level and sigma value.
Process Capability (Cp) = (USL-LSL)/(6*SD)
Where, USL = Upper spec limit
             LSL = Lower Spec Limit
             SD = Standard Deviation.
Lets assume process is centered around mean, in that case,
Sigma level = 3*Cp = 3* (USL-LSL)/(6*SD)
Keepin…[Read more]

Hi GKP,
your question – “Sigma being standard deviation ,the less it is , better the control .If it’s correct, why six sigma  is better than one sigma”?
I have made two Sigma’s in 2 different fonts.
Sigma as standard deviation is not same as Sigma in SIX SIGMA (Here Sigma is known as Sigma Levels), where as sigma as SD known as sigma…[Read more]

Scott,
To check whether there is reduction in tickets per month, you can use Chi-square test to check the significance. As you are counting the tickets per month, it is discrete data and Chi-square test is best suitable for this kind of data.

Rajashekhar,
You can contact Rathish in this ID or phone for details.
[email protected]
Contact # 09341790470

Ok. How this is related in the discussion is, Both mean and SD are derived from probability distributions. For each distribution, based on MGF, mean and SD derived. For normal distribution, SD is the mean square root of deviation.
whereas for a continuous distribution, it is given by

The variance is therefore equal to the second…[Read more]

Yeah, we can take sum of variances and then square root for the final standard deviation. only thing is that all the samples should follow normal distribution. Otherwise, get the probability function and get 2nd order momonet for standard deviation.
Whereas for a continuous distribution, it is given by

The variance is therefore…[Read more]

You can do lot of different analysis with the data. Simple tools like pareto, CE diagram, Pocess mapping. or you can use value stream mapping to identify VA/NVA acticities…

Joy, There are so mny consulting firms available for the GB pogram. contact me in this ID: [email protected] I will help you out.

KS, If you are aware of MGF(Moment generting function), then i think it will clarify all your questions. Mean ans Standard devition are generated by using MGF. mean is the first order and SD is the second order of MGF.

Hanna,
When you have more number of class intervals, then Bar will look thin and when you have less number of class intervals, bar will look thick. Otherwise there is no relation…

Hi, Can you send me the same PPP in this ID. [email protected]
Thanks in advance

yes Michael, I got the mail & replied back to you. can you send me the case studies as soon as possible.
waiting for your reply

Hi,Thanks for nice response. can you mail me in this ID. we can discuss in detail.my mail ID: [email protected],SumantThis thread has been moved to the IT/Software discussion forum. Please click here to continue the discussion.

Hi,
Thanks for nice response. can you mail me in this ID. we can discuss in detail.
my mail ID: [email protected]
regards,
Sumant

You can use X-bar S chart

Instead of taking 10% or sqrt(mean), best thing is set an internal specification limit. what do you want? how much is acceptable from your point of view? based on that find out what should be the standard deviation.

Dee,
Do you have any specification limits? let say, you have USL as “U” ( if the metric is TAT, then you will have USL only). then in that case, you should keep your SD = 1/6(U) – 60( as mean is 360).
How? For a six sigma process, process capability (Cp) should be 2. then use Cp formula as (USL-Mean)/3*Sigma. Use Cp as 2 and get the standard…[Read more]

Hi FTSSB,
can you send me details about these games???
send me in this ID: [email protected]
Thanks…