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Found 24 results

  1. P_Control_Chart.xls I have created a "P Control Chart" in Excel Spreadsheet for different Sample Size. But unable to get the accurate graph as Sample Size varies, the control limits change. In case of "Zero" defects from "x" sample size the process should be "Under Control" whereas the graph depicts "Out of Control" because the LCL is "0.08" but Process "p" is "0.00" (Please see row 8 in attached spread sheet). Likewise, there are couple of other samples where it shows Process is out of control as I am unable to make LCL zero when sample size is varying each time. Please suggest me the way
  2. Can any one help me abt FMEA like how to calculate etc.etc. mine is an electronics company supplying on OEM basis.
  3. Friends, Would appreciate if someone can offer a BPO example (let's a say a call evaluation process) where Attribute Gage Study (Analytic Method) can be applied. The example offered in Minitab 15 is'nt striking enough......help will be appreciated....Gud times... Kiran Varri
  4. Hi, My name is Ravi,  I have started a project for my GB. Project is on Customer satisfaction. 1. I know the VOC 2. I know what are the factors effecting CSAT with the CSAT survey data which we get. 3. I have completed fish bone , XY chart . 4 . I need to start hypothesis tesing, how do i proceed with hypothesis testing. Need help.
  5. Hi every one , what is Regression Analysis and corelation ? how it's calculated in the case of simple regression and multiple regression ? Ashish
  6. In FMEA , for RPN (Risk Priority number)'s threshold value, is there any industry thumb rule or best practice that can be used?
  7. When managers need a focusing method, they should collect data and use it effectively. Two focusing methods which are commonly used are The 80-20 principle and the Theory of Constraints. 1. The 80-20 principle -states that, for many events, roughly 80% of the effects come from 20% of the causes. If we are able to find those vital few that contribute to most of the delays or delays or time spent, we can try to find methods to address them. This requires data collection and preparation of a Pareto chart. A hospital may like to know which of the complaints are most frequent at th
  8. Even though Lean and Six Sigma are more than a set of tools. Here are some commonly used tools / methodologies in Lean: Waste Identification Standard Operating Procedures (SOP) Continuous Improvement (Kaizen) Value Stream Mapping (VSM) Metrics (Cycle Time, TAKT Time, Process Cycle Efficiency) Planning (A3, Hoshin-Kanri) Mistake Proofing (Poka-Yoke) Total Productive Maintenance (TPM) Single Minute Exchange of Dies (SMED) Load Balancing (Heijunka) Plan - Do - Check - Act Cycle (PDCA) Visual Controls Pull Systems (Kanban, Supermarket, FIFO) Flow Concepts Line Balancing Just in Time Concepts Auto
  9. This is a test to see how to share 5S Lean YouTube video on this site. Didn't see any obvious way. Also will be sharing the associate free online assessment afterwords. http://www.youtube.com/watch?v=t8IfQp4A4ZI Also SEE Free Online 5S Lean Manufacturing Assessment
  10. Dear VK Sir, I would like to know the efficiency of printing press and process capability,employes attendance register I have the employee details ,Capacity of machines,actual pages printed ,expected pages per day,date ,daily data so in control charts what should we take and how in general how we should go about it . Thanks
  11. Dear All , Pls guide if Multivari chart can be used for discrete data . If yes Pls guide how ????
  12. Hi all I am working in KPO industry. I am interested to start 5S concepts in my team. I know the concepts of 5S. I dont know how to start. Can anyone guide me? Thanks in advance Manikandan Shankar
  13. I am creating one training material on ANOVA ANOVA : to analyze two samples or more than two samples compare sample means , Null hypothesis : Ho : m1 =m2=m3=....mn Alternate hyposthesis : Ha : any one of the sample means is significantly different The above is one way ANOVA. Then what is two way ANOVA ? when samples have two distict categories . The ANOVA study is two way ANOVA. I am not very comfortable on this understanding. Looking for some coaching and some training material on ANOVA study. Not to confuse with ANOVA gage R&R study. parashuraman ramaswamy
  14. While using this option in Minitab 15, the 4 columns : StdOrder, RunOrder, Parts & Operators actually do not give the measured values. i.e the actual measurements. Then how is this option helpful in day to day life of a SixSigma Professional....guidance appreciated.... Gud times... Kiran Varri (www.kiranvarri.blogspot.com)
  15. What is the difference between Sampling plan and Inspection, my knowledge Sampling is used to accept or reject a product lot however the Inspection is used to judge the quality of the product. but still i need more clarification.
  16. Hi Universe of 2110 documents have to be sampled. Using the sample calculator, with 95% confidence level and 4% Margin Error the sample size arrived is 467. However, when I selected randomly 10% sample (211 documents), the sample mean and sample median is not too much deviating from the population mean and population median. The SE Mean is also very low (0.00787). Sample Mean - 2:08 (h:mm) - 2:07 is population mean. Sample Median - 1"04 (h:mm) - 1:04 is population median CI for Mean = 1:45 (h:mm) and 2:30 (h:mm). CI for Median = 0:47 (h:mm) and 1:16 (h:mm) My question is, cons
  17. Hi, I want to understand the actual meaning of t-value.As I understand that t-test is for mean checking of no. of datasets. What happens if t-value more or less. Could you pl put some light on this. Rds. Yogesh
  18. Can someone help me to understand the difference between the Margin Error and Confidence Interval? I understand that when the confidence interval increases sample size will be smaller and when the margin error increases sample size required will be higher. But I am curious to know what is the difference and interpretation between these two when we are looking at statistically signifcant samples. Thanks Madhan
  19. Hi Please tell me what is the use of Sipoc ?
  20. Dear all Please suggest me when to implement PFMEA, and how to start? Regards, Sanjeev.
  21. Hi! As a Six Sigma resource, i work for a BPO. I have this question on Non parametric testing. Please consider this case: When we go in for a parametric testing for equality of means for more than 2 populations, we conduct an ANOVA test to find out whether there is a significant difference amongst them or not. Now, if the null hypothesis gets rejected, we go ahead and conduct Tukeys or Scheffé's method to find out which population is significantly different from the others. While if the data is non normal or discrete, we go ahead with the Non parametric ANOVA (Kruskall-Wallis test or others
  22. Hi, I want to understand the difference in usage or significance of both these charts apart from the fact that Range is involved in one of these and Sample SD is involved in the other How do we really decide: 1. When these charts should really be applicable/useful in practical scenario 2. Which of these should be preferred. Please share your views on the same.
  23. I have a basic question - i understand while using I-MR chart the data has to be normal. my question is why must the data be normal.
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