Find the Mode 78 , 80 , 66 , 68 , 71 , 64 , 82 , 71 , 70 , 75 , 77 , 86 , 72

$78$ , $80$ , $66$ , $68$ , $71$ , $64$ , $82$ , $71$ , $70$ , $75$ , $77$ , $86$ , $72$

The mode is the element that occurs most in the data set. In this case, $71$ occurs $2$ times.