Math, asked by sonuagrl9939, 1 year ago

The mean of 100 observations was found to be 30.if at the time of calculation two observations were wrongly taken as 32 and 12 instead of 23 and 11.then find correct mean

Answers

Answered by Anonymous

6

total of observation =30*100=3000
without the two observation total=3000-44=2956
so now new total=2956+34=2990
and hence new mean =2990/100=29.9

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