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<blockquote data-quote="WayneF" data-source="post: 207582" data-attributes="member: 12496">I imagine the Sigma company did want the word association with higher quality manufacturing processes, and I'm sure they do have good products,&nbsp; but it is just a name, like Acme Corporation (RoadRunner cartoons, from other Greek roots).&nbsp; For example, I might put in a new fried chicken place, named Best Chicken, but the actual quality will depend on other factors.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />And I don't mean to imply the term Sigma has reserved uses. Anyone can use Sigma as they wish, like the X in algebra, and can be used in any way.&nbsp; For example, the video industry uses Gamma for video correction, but film manufacturers also use the term Gamma for film contrast, which is an entirely different subject, a very different meaning, no relationship.&nbsp; But within those two industries, it has their specific meanings.And odds are, if any scientific uses simply say Sigma, they probably refer to standard deviation, how widely a selection of samples vary from the norm.</blockquote>

[QUOTE="WayneF, post: 207582, member: 12496"] I imagine the Sigma company did want the word association with higher quality manufacturing processes, and I'm sure they do have good products, but it is just a name, like Acme Corporation (RoadRunner cartoons, from other Greek roots). For example, I might put in a new fried chicken place, named Best Chicken, but the actual quality will depend on other factors. :) And I don't mean to imply the term Sigma has reserved uses. Anyone can use Sigma as they wish, like the X in algebra, and can be used in any way. For example, the video industry uses Gamma for video correction, but film manufacturers also use the term Gamma for film contrast, which is an entirely different subject, a very different meaning, no relationship. But within those two industries, it has their specific meanings. And odds are, if any scientific uses simply say Sigma, they probably refer to standard deviation, how widely a selection of samples vary from the norm. [/QUOTE]

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