The accompanying data represent the 13.3 12.6 10.1 8.4 7.8 approximate population, in millions, of the 20 most populous cities in the world. 13.3 12.1 9.3 8.2 7.8 12.9 10.9 8.9 7.9 7.6 12.7 10.3 8.5 7.9 7.3 Use these data to construct a frequency distribution with a first class of 6.5-7.5. Fill in the missing classes and the frequency for each class below. Population (millions of people) Number of Cities 6.5-7.5 9.8-10.8 10.9-11.9 I