Question
Find the value of 'a' in the given data if the mean of
the given data is 27. 20, 25, 30, 28, 26, 24, a, 29, 22, 23Solution
Sum of each term of given data = 10 × 27 = 270 So, 20 + 25 + 30 + 28 + 26 + 24 + a + 29 + 22 + 23 = 270 Or, 227 + a = 270 Or, 'a' = 43 Hence, option C.
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