We didn't do mental math today, we went right into learning a new lession about mean, median and mode.
median-middle number
mean(x) the sum of all the x-values, divided by n
mode- most frequently occuring. NOTE may NOT exist, or a data may have mutiple modes.
ex NO MODES
6 4 9 3
ex MULTIPLE MODES
6 6 4 4 9 9