Introduction
Whether we like it or not, outliers happen in our daily lives! For instance, it can be a mansion that sells in your neighbourhood for a price three to four times higher than the average house price. In the workforce, it can also be a few professionals earning very high salaries when compared to the rest of the employees. Or if you were to look at the arrival times of planes at your local airport, you would see that most planes land in a [0..10min] interval around the scheduled arrival time, but then, from time to time, a few planes may be late by 1hr or more...
But back to performance testing where we measure the response times of our applications.