Question
Each of 20 students records how many pets they own. The results are shown in the table.
Number of pets: 0, 1, 2, 3, 4
Frequency: 4, 6, 5, 3, 2
Number of pets: 0, 1, 2, 3, 4
Frequency: 4, 6, 5, 3, 2
Find the mean number of pets.
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