The number of vehicles passing through a bank drive- up line during cach 15- minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen- minute period. 20 22 20 23 23 20 25 22 30 26 26 24 19 26 20 15 10 22 22 22 O 23 O 22 O 26 O 21.85

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