Any process of observation or measurement is called an experiment in statistics. For example, counting the number people visiting a restaurant in a day is an experiment, and so is checking the number obtained on the roll of a die. Typically, we will be interested in experiments whose outcomes differ from one another due (at least in some degree) to random chance.
Statistics and data science, defined
Experiment
Where this gets used
We teach data science and statistics online, one subject at a time, on fixed start dates with an instructor who marks your work.