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the mean of 9 values of a data calculated as 15. if one more value is introduced in the data, the mean of 10 values becomes 16. find the 10th value |
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Answer» mean=sum of OBSERVATION/(Total NUMBER of observations) In the first case, mean=15 Total number of observations=9 so,sum of observation=15*9=135 let new number be x In the SECOND case, mean=16 Total number of observations=9+1=10 so,sum of observation=16*10=160 since we added a new number, 135+x=160 x=25 |
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