The table below contains data about the cost of electricity

The table below contains data about the cost of electricity during arecent month for a random sample of 30 one-bedroom apartments na large city Complete parts (a) through (c)below. 49 203 47 74 37 a. Construct a frequency distribution and a percentage distribution that have dass intervals with the upper dass boundanes s99.S119, and so on. Cost (S Frequency Construct a frequency distributon. but less than but less than but less than 140 but less than 160 160 but less than 180 180 but less than 200 200 but less than 220

Solution

Frequency distribution             frequency                     percentage

80 bt less than 100                     3                                   10

100 bt less than 120                  5                                    16.66

120 bt less than 140                  5                                    16.66

140 bt less than 160                  5                                      16.66

160 bt less than 180                  7                                       23.33

180 bt less than 200                  3                                       10

200 bt less than 220                   2                                       6.66