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(0 - negative outcome, 1 - positive outcome)

Am I correct? Because I found a different answer. My answer: Accuracy rate: TP+TN/ALL(58+25/58+44+23+25)=83/150 Error rate: FN+FP(23+44)= 67/150

Someone say it should be: Accuracy rate: 58/102 Error rate: 23/48

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The 58/102 in your example is TN/N which is specificity, and 23/48 is FN/P which is false negative rate, or 1-sensitivity. Refer to this page for more details.

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  • $\begingroup$ does error rate (or this concept) exist in confusion matrix? $\endgroup$
    – Woddyopened
    Commented Aug 2, 2022 at 5:02
  • $\begingroup$ error rate is not commonly used as accuracy, though technically it should be 1-accuracy $\endgroup$
    – crx91
    Commented Aug 2, 2022 at 5:48

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