Question

define mean median and mode

Answer 1

Mode which repeat at certain intervals of time and median means mid value

Answer 2

Hey there !

mean: regular meaning of "average"median: middle value. 
mode: most often. (In the above, I've used the term "average" rather casually. The technical definition of what we commonly refer to as the "average" is technically called "the arithmetic
mean": adding up the values and then dividing by the number of values.

Hope it helps you !