Template:Diagnostic testing diagram

		Predicted condition		^Sources:^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8] ^{view talk edit}
	Total population $= P + N$	Predicted positive (PP)	Predicted negative (PN)	Informedness, bookmaker informedness (BM) $= TPR + TNR - 1$	Prevalence threshold (PT) $= .mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}⁠√TPR × FPR - FPR/TPR - FPR⁠$
Actual condition	Positive (P) ^[a]	True positive (TP), hit^[b]	False negative (FN), miss, underestimation	True positive rate (TPR), recall, sensitivity (SEN), probability of detection, hit rate, power $= ⁠ TP / P ⁠$ $= 1 - FNR$	False negative rate (FNR), miss rate type II error ^[c] $= ⁠ FN / P ⁠$ $= 1 - TPR$
Actual condition	Negative (N)^[d]	False positive (FP), false alarm, overestimation	True negative (TN), correct rejection^[e]	False positive rate (FPR), probability of false alarm, fall-out type I error ^[f] $= ⁠ FP / N ⁠$ $= 1 - TNR$	True negative rate (TNR), specificity (SPC), selectivity $= ⁠ TN / N ⁠$ $= 1 - FPR$
	Prevalence $= ⁠ P / P + N ⁠$	Positive predictive value (PPV), precision $= ⁠ TP / PP ⁠$ $= 1 - FDR$	False omission rate (FOR) $= ⁠ FN / PN ⁠$ $= 1 - NPV$	Positive likelihood ratio (LR+) $= ⁠ TPR / FPR ⁠$	Negative likelihood ratio (LR−) $= ⁠ FNR / TNR ⁠$
	Accuracy (ACC) $= ⁠ TP + TN / P + N ⁠$	False discovery rate (FDR) $= ⁠ FP / PP ⁠$ $= 1 - PPV$	Negative predictive value (NPV) $= ⁠ TN / PN ⁠$ $= 1 - FOR$	Markedness (MK), deltaP (Δp) $= PPV + NPV - 1$	Diagnostic odds ratio (DOR) $= ⁠ LR+ / LR- ⁠$
	Balanced accuracy (BA) $= ⁠ TPR + TNR / 2 ⁠$	F₁ score $= ⁠ 2 PPV \times TPR / PPV + TPR ⁠$ $= ⁠ 2 TP / 2 TP + FP + FN ⁠$	Fowlkes–Mallows index (FM) $= \sqrt PPV \times TPR$	Matthews correlation coefficient (MCC) $= \sqrt TPR \times TNR \times PPV \times NPV$ $- \sqrt FNR \times FPR \times FOR \times FDR$	Threat score (TS), critical success index (CSI), Jaccard index $= ⁠ TP / TP + FN + FP ⁠$

^ the number of real positive cases in the data
^ A test result that correctly indicates the presence of a condition or characteristic
^ Type II error: A test result which wrongly indicates that a particular condition or attribute is absent
^ the number of real negative cases in the data
^ A test result that correctly indicates the absence of a condition or characteristic
^ Type I error: A test result which wrongly indicates that a particular condition or attribute is present

References

^ Fawcett, Tom (2006). "An Introduction to ROC Analysis" (PDF). Pattern Recognition Letters. 27 (8): 861–874. doi:10.1016/j.patrec.2005.10.010. S2CID 2027090.
^ Provost, Foster; Tom Fawcett (2013-08-01). "Data Science for Business: What You Need to Know about Data Mining and Data-Analytic Thinking". O'Reilly Media, Inc.
^ Powers, David M. W. (2011). "Evaluation: From Precision, Recall and F-Measure to ROC, Informedness, Markedness & Correlation". Journal of Machine Learning Technologies. 2 (1): 37–63.
^ Ting, Kai Ming (2011). Sammut, Claude; Webb, Geoffrey I. (eds.). Encyclopedia of machine learning. Springer. doi:10.1007/978-0-387-30164-8. ISBN 978-0-387-30164-8.
^ Brooks, Harold; Brown, Barb; Ebert, Beth; Ferro, Chris; Jolliffe, Ian; Koh, Tieh-Yong; Roebber, Paul; Stephenson, David (2015-01-26). "WWRP/WGNE Joint Working Group on Forecast Verification Research". Collaboration for Australian Weather and Climate Research. World Meteorological Organisation. Retrieved 2019-07-17.
^ Chicco D, Jurman G (January 2020). "The advantages of the Matthews correlation coefficient (MCC) over F1 score and accuracy in binary classification evaluation". BMC Genomics. 21 (1): 6-1–6-13. doi:10.1186/s12864-019-6413-7. PMC 6941312. PMID 31898477.
^ Chicco D, Toetsch N, Jurman G (February 2021). "The Matthews correlation coefficient (MCC) is more reliable than balanced accuracy, bookmaker informedness, and markedness in two-class confusion matrix evaluation". BioData Mining. 14 (13): 13. doi:10.1186/s13040-021-00244-z. PMC 7863449. PMID 33541410.
^ Tharwat A. (August 2018). "Classification assessment methods". Applied Computing and Informatics. 17: 168–192. doi:10.1016/j.aci.2018.08.003.

[9] the number of real positive cases in the data

[10] A test result that correctly indicates the presence of a condition or characteristic

[11] Type II error: A test result which wrongly indicates that a particular condition or attribute is absent

[12] the number of real negative cases in the data

[13] A test result that correctly indicates the absence of a condition or characteristic

[14] Type I error: A test result which wrongly indicates that a particular condition or attribute is present

[1] Fawcett, Tom (2006). "An Introduction to ROC Analysis" (PDF). Pattern Recognition Letters. 27 (8): 861–874. doi:10.1016/j.patrec.2005.10.010. S2CID 2027090.

[2] Provost, Foster; Tom Fawcett (2013-08-01). "Data Science for Business: What You Need to Know about Data Mining and Data-Analytic Thinking". O'Reilly Media, Inc.

[3] Powers, David M. W. (2011). "Evaluation: From Precision, Recall and F-Measure to ROC, Informedness, Markedness & Correlation". Journal of Machine Learning Technologies. 2 (1): 37–63.

[4] Ting, Kai Ming (2011). Sammut, Claude; Webb, Geoffrey I. (eds.). Encyclopedia of machine learning. Springer. doi:10.1007/978-0-387-30164-8. ISBN 978-0-387-30164-8.

[5] Brooks, Harold; Brown, Barb; Ebert, Beth; Ferro, Chris; Jolliffe, Ian; Koh, Tieh-Yong; Roebber, Paul; Stephenson, David (2015-01-26). "WWRP/WGNE Joint Working Group on Forecast Verification Research". Collaboration for Australian Weather and Climate Research. World Meteorological Organisation. Retrieved 2019-07-17.

[6] Chicco D, Jurman G (January 2020). "The advantages of the Matthews correlation coefficient (MCC) over F1 score and accuracy in binary classification evaluation". BMC Genomics. 21 (1): 6-1–6-13. doi:10.1186/s12864-019-6413-7. PMC 6941312. PMID 31898477.

[7] Chicco D, Toetsch N, Jurman G (February 2021). "The Matthews correlation coefficient (MCC) is more reliable than balanced accuracy, bookmaker informedness, and markedness in two-class confusion matrix evaluation". BioData Mining. 14 (13): 13. doi:10.1186/s13040-021-00244-z. PMC 7863449. PMID 33541410.

[8] Tharwat A. (August 2018). "Classification assessment methods". Applied Computing and Informatics. 17: 168–192. doi:10.1016/j.aci.2018.08.003.

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