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4. The following are the ages of the first ten students who enrolled in a certain college. Find the mean. 23. 21, 18, 17,

4. The following are the ages of the first ten students who enrolled in a certain college. Find the mean. 23. 21, 18, 17, 19, 21, 20, 18, 19, 24. . 19 . 22 . 20 D. 21 5. Find the median of the following set of observation. 11,11,13,15,16,17,18,18,19,20. . 15 . 17.5 C. 16.5 D. 15.5

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