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In the following paragraph:

This plot is a stray evidence of how Pearson correlation coefficient is often incomputable and hence ineffective.

What does the expression "a stray evidence" mean?

Could you give some more examples?

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  • "Evidence" is a mass noun, and doesn't take the indefinite article or number adjectives. If you want to specify just one, you say "a stray piece of evidence". Commented Nov 1, 2011 at 22:24

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A stray evidence refers to a piece of evidence that wasn't necessarily tied closely in to the subject. One of Dictionary.com's definitions of stray is:

10. found or occurring apart from others or as an isolated or casual instance; incidental or occasional.

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    I'm afraid there aren't many examples for OP. Google finds 23 hits in total for a stray evidence, which net down to six distinct instances of a usage like OP's. Without the article, stray evidence scores a slightly more respectable 1000 or so. Not exactly commonplace, but enough to back me up in thinking this use of the article is a bit odd here. Commented Oct 28, 2011 at 1:26
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    "Evidence" is a mass noun, and doesn't take the indefinite article or number adjectives. If you want to specify just one, you say "a stray piece of evidence". Commented Nov 1, 2011 at 22:25

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