1. Quiz scores of statistics students were obtained by a teacher and listed below. Construct a frequency distribution beginning with a lower class limit of 0 and use a class width of 2. What upper class boundary of the fifth class?
4, 3, 3, 9, 6, 7, 3,1, 8, 4

2. Quiz scores of statistics students were obtained by a teacher and listed below. Construct a frequency distribution beginning with a lower class limit of 0 and use a class width of 2. What lower class boundary of the second class?

7, 3, 8, 6, 6, 1, 6,9, 6, 4

3. In a survey, 20 people were asked how many magazines they had purchased during the previous year. The results are shown below. Construct a histogram to represent the data. Use 6 classes with a class width of 10, and begin with a lower class limit of 0. What is the upper class limit of the second class?

21, 53, 16, 26, 57, 0, 7,51, 22, 21, 12, 59, 15, 41, 55, 50, 26, 36, 59, 8

4. The data represents the body mass index (BMI) values for 20 females. Construct a frequency distribution beginning with a lower class limit of 15.0 and use a class width of 6.0. What frequency is listed for the second class?
17.6, 22.6, 30, 38.5, 40.5, 48.8, 55.8,38.8, 27.2, 43.6, 53.6, 20.4, 41.1, 38.5, 20.9, 31.9, 50.5, 41.4, 30.3, 23.3