Talk:Signal-to-noise statistic

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Single source?

Latest comment: 14 years ago1 comment1 person in discussion

The particular formula here seems unusual and the one souce quoted uses the median instead of the mean as stated here. Are there other sources for a terminology defined in this way? Melcombe (talk) 16:24, 23 August 2010 (UTC)Reply

Sum of the deviations or sum of the variances?

Latest comment: 11 years ago1 comment1 person in discussion

It seems strange to add standard deviations in the numerator. The difference of values is a random variable whose variance is the sum of the two variances. Therfore one would expect the denominator to be ${\sqrt {\sigma _{1}^{2}+\sigma _{2}^{2}}}$ rather than $\sigma _{1}+\sigma _{2}$ . --Jorge Stolfi (talk) 23:21, 10 February 2013 (UTC)Reply

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