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InterviewSolution
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The mean of 31 results is 60. If the mean of the first 16 results is 58 and that of the last 16 results is 62, find the 16th result. |
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Answer» It is given that Mean of 31 results = 60 So the total sum = 31 (60) = 1860 We know that Mean of first 16 results = 58 So the total sum = 16 (58) = 928 Mean of last 16 results = 62 So the total sum = 16 (62) = 992 We get the 16th result = total sum of first 16 results + total sum of last 16 results – total sum of 31 results By substituting the values 16th result = 928 + 992 – 1860 On further calculation 16th result = 1920 – 1860 = 60 Therefore, the 16th result is 60. |
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