JEE Main 2015 Mathematics question
The mean of a data set comprising of 16 observations is 16. If one of the observation value 16 is deleted and three new observations valued 3, 4 and 5 are added to the data, then the mean of the resultant data is
Answer: (1)
Solution
The original total is . Removing the observation 16 leaves 15 values totalling 240;
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