Tool for statistical calculation of Sensitivity and Specificity. Sensitivity and Specificity are two criteria of statistical measures evaluating probabilities of presence or absence of phenomena.

Sensitivity and Specificity - dCode

Tag(s) : Data processing

dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!

A suggestion ? a feedback ? a bug ? an idea ? *Write to dCode*!

Tool for statistical calculation of Sensitivity and Specificity. Sensitivity and Specificity are two criteria of statistical measures evaluating probabilities of presence or absence of phenomena.

Statistically, **sensitivity** is the ratio of the number of true positives to the total number of positives (including those declared false by mistake).

$$ \text {Sensitivity} = \frac {\text {True positives}} {\text {True positives} + \text {False negative}} $$

__Example:__ A set of individuals: A,B,C,D,E (5 elements, all sick), with as declared as sick A,B,C (3 elements) and 'D,E 'declared not sick by mistake. Sensitivity is $$ S = \frac{3}{5} = 60 \% $$

**Specificity** is the ratio of the number of true negatives to the total number of negative elements (including those declared true by mistake).

$$ \text {Specificity} = \frac {\text {True negatives}} {\text {True negatives} + \text {False positives} $$

__Example:__ A set of of individuals: A,B,C,D,E (5 elements, all healthy), with as declared healthy A,B (2 elements) and C,D,E declared sick by mistake. Specificity is $$ S = \frac{2}{5} = 40 \% $$

The most common use of **sensitivity and specificity** is for diagnostic tests of disease (which have an error rate), it is then possible to determine their quality: the more sensibility and specificity are strong (close to 1 or 100%), more they are reliable.

In computer science one uses rather the values of precision and recall.

dCode retains ownership of the online 'Sensitivity and Specificity' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Sensitivity and Specificity download for offline use on PC, tablet, iPhone or Android !

Please, check our community Discord for help requests!

specificity,sensitivity,predictive,value,statistic

Source : https://www.dcode.fr/sensibility-specificity

© 2020 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaching / CTF.

Feedback

▲