When 30 randomly selected customers left a convenience store, each was asked the number of items he or she purchased. Construct an ungrouped frequency distribution for the data. Create a histogram for the data in #7. Create a frequency polygon for the data in #7.   2            10          5            4            7 6            3            9            7            6 7            6            4            9            7 6            3            4            3            5      6            10          10          9            10          4            3            2            8            5

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