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1. The following data represent the time for phone calls of students to their parents, recorded to the nearest tenth of a minute, gathered from 45 students. 5.0 4.1 3.5 4.5 3.2 3.7 3.0 2.6 2.2 1.6 3.1 3.3 3.8 3.1 4.7 3.7 5.3 3.4 4.3 3.6 2.9 3.3 3.9 3.1 3.3 2.5 3.4 5.3 3.1 3.7 4.4 3.2 4.1 1.9 3.4 5.2 5.0 3.5 4.7 3.B 3.2 2.6 3.9 3.0 4.2 a. Set up a relative frequency distribution table with 6 class intervals (ascending order) CF CI Tally f Class mark CB Rf Total b. Construct a relative frequency histogram. C. Construct a frequency polygon (cumulative frequency)