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1. The AstroStat Slog Blog Archive Significance of 5 counts
... My source shows only 5 counts in a short 5 ksec Chandra exposure. ... We calculated the significance of observing 5 counts given the expected background counts of 0.1 using spfunc.gammp(5,0.1) =8e-8. ... I believe more fine tuning in computing this p-value is necessary but I wish to address that computing the p-value assuming Ho: background counts=0.1 vs. ... For a given rescaled background (b/50), the p-value is the probability that the counts in the source region can exceed the observed counts. ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2008/significance-of-5-counts/index.html -- 24.6 Кб -- 01.03.2014
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