the meanof 25 observation is 65 and mean of next 10 observation or 62 find the mean of all 35observation
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mean of 25 observation is 65
sum of them is 65*25= 1625
mean of next 10 observation is 62
sum of them = 620
sum of the whole 35 no.s is 1625+620=2245
mean of the 35 no.s=64.14
hope it is helpful
sum of them is 65*25= 1625
mean of next 10 observation is 62
sum of them = 620
sum of the whole 35 no.s is 1625+620=2245
mean of the 35 no.s=64.14
hope it is helpful
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