Question: 4. A qualitative variable with three classes (X, Y, and 2) is measured for each of 20 units randomly sampled from a target population. The

4. A qualitative variable with three classes (X, Y, and 2) is measured for each of 20 units randomly sampled from a target population. The data (observed class for each unit) are listed below. Y X XZ X Y Y Y X XZ X Y YXZ Y Y Y X a. Compute the frequency for each of the three classes and display in a table. b. Compute the relative frequency for each of the three classes and display in a table. c. Display the results of part a, in a frequency bar graph. d. Display the results of part b, in a pie chart

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