How many teeth does my mother have? To do this, I would have to go find my mother, and then I would have to ask her to open her mouth and count the teeth in her mouth. And maybe I get a number like 30. So it's kind of like how much does my pet grapefruit weigh? I do have to collect one data point, but one data point is not going to have variability. So I am not collecting data with variability. So this is not a statistical question.