AP ICET 2013

Question 141

The mean of 6 observations is calculated as 24 and later it was noted that one of the observations is wrongly taken as 24 intstead of -24 then the correct mean is

Solution

when we calculated mean we ascending data 

here if we take -24 instead of the 24 so it comes in first place as it is smallest value and affect first 3 value of 6 observation 

so (24-(-24))\3 = 16 new mean      Answer 


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