37 N several Noby eval isse, including the once of open-ended interval) te das inval is doing the work of Answers on pages 423 and 424 TWO AGE DISTRIBUTIONS SMALL TOWN U.S. POPULATION (2010) 196) AGE 65-above 105 60-64 53 55-59 45 50-54 40 45-49 44 40-44 38 35-39 31 30-34 27 25-29 25 20-24 20 15-19 20 10-14 19 5-9 17 0-4 16 Total 500 7 7 99% Note: The top class (65-above) has no upper boundary. Although less preferred, as discussed previously, this type of open-ended class in employed as a space-saving device when, as in the Statistical Abstract of the United States, many different tables must be listed. Source: 2012 Statistical Abstract of the United States 2.18 The following table shows distributions of bachelor's degrees eamed in 2011-2012 for selected fields of study by all male graduates and by all female graduates. (a) How many female psychology majors graduated in 2011-2012? (b) Since the total numbers of male and female graduates are fairly different-600.0 thousand and 803.6 thousand-it is helpful to convert first to relative frequencies before making comparisons between male and female graduates. Then, inspect these relative frequencies and note what appear to be the most conspicuous differ- ences between male and female graduates.