Burger King is one of the largest fast-food franchise operations in the world. Recently, the district manager for Burger King in Las Vegas conducted a study in which she selected a random sample of sales receipts. She was interested in the number of line items on the receipts. For instance, if a customer ordered two 1/4-pound hamburgers, one side of fries, and two soft drinks, the number of line items would be five. The following data were observed:

a. Develop a frequency distribution for these data. Discuss briefly what the frequency distribution tells you about these sample data.
b. Based on the results in part a, construct a frequency histogram for these sample data.