1) Examining those dot plots we have
Waiter A, the following distribution:
4, 4, 6,6,6,6,8, 10,10,10,
Walter B
12, 14,14,16,16,16,16,18,18,20
2) The mean for waiter A, is given by the sum of their tips, divided by the number of it:
The mean for Waite A is $6 tip
So the mean for Waiter B is $16
3) So examining the options, the answer is :
The mean for waiter B is higher than the mean for waiter A.
