What is the relationship between the General Inspection Levels (I, II, III)contained in ANSI 1.4 and Confidence Levels? The higher the Level, the greater confidence one has that the characteristics of the sample reflect the characteristics of the population from which the sample is drawn but, in "round numbers" what are the associated Confidence Levels? It seems that more years ago than I care to remember I was told that Level III would provide about 95% confidence, Level II around 85-90% and Level I around 80% but I have never seen any numbers in print. In advance, I thank you for your time and information.
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forrestbreyfogle 12/21/2004
INITIAL POSTING:
Hi, I'm project managing a process to reduce accounts payable transaction costs in a large business unit. I'm just at the beginning and the CTQ's are suspiciously complex which tells me I'm doing something wrong. Here is what I have so far:
STRATEGIC INTENT
Lower SAPAP 'per transaction' cost and achieve service levels using lean 6 sigma with a view to capturing entire AP service and then commercialising.
PROJECT CUSTOMERS
· The primary customer is the GOB project.
· Internal customers impacted by the project are: the AP team, the business units to who we are supplying the AP service, Procurement, and Finance.
· External customers impacted by this project are the Vendors.
PROJECT CTQ OUTCOMES:
The Scanning Sub Process (SSP) is achieving:
1. XX% invoices posted using SSP [currently 7%]
2. XX% defects in order to reduce rework and increase productivity [Currently 23.4%]
by 01 Apr 05, in order to achieve the 2 primary customer CTQ’s.
Would someone be willing to give me their thoughts on this?
Any and all feedback gratefully accepted.
Peter
RESPONSE: The scope of your project might be described as "boil the ocean". I like to track overall objectives such as this at the 30,000-foot-level. Next, we would drill down (rescope) to specific (more managable) projects, which impact the overall metric, but are tracked relative to their baselining and improvement at the 20,000-foot-level.
When each individual project 20,000-foot-level metric moves in a positive direction, the overall 30,000-foot-level metric will follow.
Hope this helps. Call me you would like to discuss further.
Forrest Breyfogle
512-918-0280 X401
forrest@smartersolutions.com
www.smartersolutions.com