1) What do we use to create the classes when the number of distinct data values of a discrete variable is small? Example 1 Constructing Frequency and Relative Frequency Distributions from Discrete Data The manager of a Wendy's fast-food restaurant wants to know the typical number of customers who arrive during the lunch hour. The data represent the number of customers who arrive at Wendy's for 40 randomly selected 15-minute intervals of time during lunch. Construct a frequency and relative frequency distribution. Number of Arrivals at Wendy's 7 6 6 6 4 6 2 6 5 6 6 11 4 5 7 6 2 7 1 2 4 8 2 6 6 5 5 3 7 5 4 6 2 2 9 7 5 9 8 5