Records kept by the chief dietitian at the university cafeteria over a 31-period show the following weekly consumption of milk (in gallons).
Milk 200 205 210 215 220 225 230 235 240
Weeks 3 4 6 2 4 3 4 4 1
(a) Find the average number of gallons of milk consumed per week in the cafeteria. (Round your answer to the nearest whole number.)
