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nyan_sandwich comments on From First Principles - Less Wrong Discussion

48 [deleted] 27 September 2012 07:04PM

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Comment author: [deleted] 29 September 2012 02:37:09AM *  0 points [-]

prior odds are 1:99 against, posterior odds are 1:9.9, therefore LR of positive is 10. I may have miscommunicated. I meant posterior when I said "positive rate" ("cancer rate given positive" was my interpretation) I can see how it is better parsed as "rate that you test positive", which is something else. Sorry for the confusion.