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The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.
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The basic marginal ratio statistics are obtained by dividing the 2×2=4 values in the table by the marginal totals (either rows or columns), yielding 2 auxiliary 2×2 tables, for a total of 8 ratios. These ratios come in 4 complementary pairs, each pair summing to 1, and so each of these derived 2×2 tables can be summarized as a pair of 2 ...
The color convention of the three data tables above were picked to match this confusion matrix, in order to easily differentiate the data. Now, we can simply total up each type of result, substitute into the template, and create a confusion matrix that will concisely summarize the results of testing the classifier:
The reason may be, at least partly, price. Toledano declined to disclose how much the fragment used for the B/1M cost, but he noted that raw meteorite can sell for more, per gram, than gold.
This article originally appeared on USA TODAY: Lions vs. Jaguars by the numbers: Wild stats from Week 11 blowout. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.
Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... = PPV + NPV − 1: Diagnostic odds ratio (DOR) = ...
New quarterback. Same Las Vegas Raiders. The first week of the new Aidan O'Connell era started Sunday, a week after Raiders head coach Antonio Pierce benched starting quarterback Gardner Minshew II.