The formula to calculate Accuracy is:
\[ A = \frac{TP + TN}{S} \]
Where:
Accuracy is defined as the measure of how many tests it takes to achieve a correct result.
Let's consider an example:
Using the formula to calculate Accuracy:
\[ A = \frac{80 + 15}{100} = 0.95 \, \text{or} \, 95\% \]
This demonstrates that with 80 true positives, 15 true negatives, and a total of 100 samples, the accuracy would be 95%.