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 in Table 8 represent the number of customers who arrive at Wendy’s for 40 randomly selected 15-minute intervals of time during lunch. For example, during one 15-minute interval, seven customers arrived. Construct a frequency and relative frequency distribution of the data.

Approach The number of people arriving could be 0, 1, 2, 3, c. Table 8 shows there are 11 categories of data from this study: 1, 2, 3, c, 11. Tally the number of observations for each category, count each tally, and create the frequency and relative frequency distributions.

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Table 8 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 10 5 9 8 5