In a particular company, the amount of money to the nearest naira spent by work- people is 225. ers on transportation to work daily were recorded as follows: 30 50 60 120 200 300 14 240 236 125 40 75 110 120 220 130 180 60 90 112 150 210 245 135 140 80 100 125 215 240 50 60 180 190 180 148 120 88 138 195 248 130 140 150 154 208 225 65 145
(a) Construct a grouped frequency distri- bution of this data taking equal inter- vals: 0-49, 50-99....
b. find the class boundaries and the class marks of each class interval.​