@MarkFL give me the average percentage out of these: 63% 25% 33.3% 62% 45.8% 25% And then the average out of these percentages: 53.8% 35.3% 27.8% 50.7% 56.5% 66.7% Cba to figure it out myself, I'm tutoring chess and these are best move percentages across 6 of their games. Want to find out what the average was.

In words, that formula tells you that to find the arithmetic mean (average - denoted by x-bar), add up the numbers, then divide the resulting sum by the number of numbers (which I assume you did).

No, I assure you it simply states how to compute the mean of a set of numbers. Mathematics is meant to be useful, not derisive.