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SPC Charting freqency calculator for X hi/lo chart

Posted 16th May 2018 at 11:51 AM by bobdoering (Bob Doering)
Updated 23rd May 2018 at 01:44 PM by bobdoering

One of the things that is unclear with Shewart charts is the frequency of charting. However, with the X hi/lo chart for precision machining, the frequency can actually be calculated. Attached is the Excel calculator for determining frequency. The...
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File Type: xlsx x hi-lo charting freq calc.xlsx (9.1 KB, 18 views)
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"nds" or Number of Discriminate Samples - the Necessary Tool to Work With "ndc"!

Posted 29th March 2018 at 11:28 AM by bobdoering (Bob Doering)
Updated 10th April 2018 at 03:08 PM by bobdoering

By now, you should be aware of the concept of “ndc” or number of discriminate categories that a measurement gage is capable of discerning. It is a statistically significant discrimination, or the capability of telling the difference between items even...
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What is the difference between OOS/OOT

Posted 1st February 2018 at 06:54 AM by invitro_spain

The terms OOS and OOT always emerge in connection with the handling of deviating analysis results during Quality control processes. Both terms have the following definitions:


Out-of-Specification (OOS) Results
A result that...
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Process Measurable Objectives

Posted 27th December 2017 at 10:45 AM by sherley13
Updated 27th December 2017 at 10:56 AM by sherley13

Auditor Questions:

Organization specifies its objectives in a rather general manner. It also specifies its processes. It is not clear how the general objectives of the organization are mirrored to the processes and how the measurable...
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IATF 16949 2016 Mandatory procedure

Posted 24th November 2017 at 05:38 AM by SATHYABALARAMAN

There are total 21 procedures which are mandatory, listed as below:

Product Safety — 4.4.1.2
Calibration—7.1.5.2.1
Training – 7.2.1
Internal Auditor company – 7.2.3
Employee Motivation—7.3.2
Engineering...
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