The following data are obtained in the survey on the number of cell phones possessed by each family. 3 4 5 4 3 4 1 6 5 2 4 5 2 3 6 3 3 2 1 3 2 3 4 5 3 2 4 3 4 5 4 2 5 3 4 6 3 5 3 6 1 3 4 2 3 4 2 4 6 3   Solve for the average number of cell phones possessed by each family.

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