Question
Find the value of 'a' in the given data if the mean of
the given data is 24. 18, 22, 28, 25, 20, 26, 30, a, 19, 24Solution
Sum of each term of given data = 10 × 24 = 240 So, 18 + 22 + 28 + 25 + 20 + 26 + 30 + a + 19 + 24 = 240 Or, 212 + a = 240 Or, 'a' = 28 Hence, option C.
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