what is the difference between QA(quality assurance) and QC(quality control)?
353698
Actually the two are very different functions.\n\nQC is verifying that approved standards and procedures are being followed properly to produce a certain level of quality. Generally sampling or testing is employed to verify acceptable levels of quality.\n\nQA is oversight and assurance that a QC program is in effect and being properly administered.\n\nI am the QC Manager for my company. The company we provide construction and maintenance services for (our client) employs their own QA folks to oversee my department to make sure we are doing our job.
106336
Software testing is where you will have the test cases and scripts to you will follow them to verify if software is working as intended.\n\nBut Software Quality Assurance is the whole testing process right from What do we need for testing? How many people do we need? What environment do we need? It also includes the development of Test Plan, Test Cases , Scripts and all other documents.\n\nSoftware testing is a subset of SQA. I hope this is clear for you.
1009388
Precision.\n\nPrecision and accuracy are both important, and are separate things. Precision is a measure of the number of significant digits in the reading. Accuracy is a measure of the correctness of the reading. \n\nIf you get on your bathroom scale and it reads 110.06875932,  you have a measurement with an unusually high degree of precision for a bathroom scale. It is totally inaccurate, however, if your real weight is 115.
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Quality is what you expect in a design, selection of parts and value of those parts assembled as expected.\n\nTolerance relates to the ease of assembly, reliability of the end result of your assembly and the cost of the final design.\n\nMetrology is a systematic way of verifying the characteristics of a part. It's a method or process. Standards are written and published so as to assure the metrology is uniform where ever it is applied.
1147809
both are diff pls refer any Univ which will help u to know better
778673
Quantitative is something that you can measure with variable data. Exemple : lenght, weight, temperature, etc...\nin contrast Qualitative is not measurable but allows to differenciate.\nEx: country, day of the week, etc...
504638
There are more processes. Contents are more detailed. Some processes names have changes( eg Quality Assurance is nor "Perform Quality Assurance"). Some terms have changed ( eg Earned Value, Planned Value had other names in the old version). A lot of the description is much more detailed.\nThe new PMBOK also has a chapter describing in detail what all  the changes are, so you can see that there if you are interested.\n\nWhat it may mean to you practically -- the new version PMBOK(PM Book of Knowledge) has nearly DOUBLE the pages (400 +) than the older version !!!
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The main function of testing and QA is to make sure your software was created correctly.  This can be broken out into three categories.\n\nProcess Quality Assurance ensures processes were followed and appropriate work products created in order to ensure quality.\n\nVerification ensures the product meets the requirements specified by the stakeholders (we built the right product).\n\nValidation ensures the product works correctly in the environment for which is was created (we built the product right).
685395
Depends on the situation.\n\nFor example, you want to decide whether a batch of products is defective.  If your test come out to be significant but actually not (type I error), you have thrown away a perfectly fine batch of products.\n\nOn the other hand, for the same batch of products, if your test come out to be not significant but actually the batch is defective (type II error), then you have accepted a bad lot of products. \n\nSo in summary, type I error wastes money, type II error saves money but consumers don't like it.  Use similar analysis in your case.
1100416
check is just a regularity.  inspection is to check specifically for certain things.
72207
Six-sigma is a quality control program that strives for less than 3.4 defects in a million opportunities; or near perfection.  In statistics, sigma represents areas under a bell curve (similar to IQ normal curves).  If all defects fall outside the shaded area (outside three sigma on either side, where the center is perfect and all shaded areas are acceptable) there is very little shaded area (defects) left.
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it is pretty good.there are lots of openings.\n\na bit of programtic skills will also a help a lot to QA testing.
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here are a couple good links.  The iso9001 one is very helpfull... I hope this helps :\n\n\nhttp://www.customerexpressions.com/cex/cexweb.nsf/landing-quasy?openpage&campaign=syqasgoog&kw=quality+assurance+system\n\nhttp://www.iso9001qualityassurance.com/
469401
depends on what type.. Definitely look into the ISO 2000 - 2001 standards for quality and or check into Six Sigma.
758970
Hi. Sigma is a unit of standard deviation. Six sigma is a level of quality control that assures (theoretically) a level control that only allows a very small number of defects. A black belt is someone certified to not only understand this concept, but can assure that processes are in control (or figure out how to get them in control) within Six Sigma.
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Quality control means inserting check points at various stages of procurement, production, delivery and provision of services and ensuring that results of check done are within the acceptable limits. This helps and ensures that services rendered and/ or end product delivered to customer is of stated/ prescibed quality as per standards laid down/ acceptable in this regard. At any check point if results of check are below acceptable/ specified values, product is either sent back for rectification/ corrective action and re-tested/ re-checked for compliance or rejected/ seggregated from the lot so that it is not available to customers. The products which do not comply with quality control requirement but still considered usable are some times sold as factory seconds.
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http://www.worldwidewords.org/qa/qa-anh1.htm