mean of 35 obs was found to be 78.5 but later on it was found 86 was misread for 68 find the correct mean
Answers
Answered by
2
sum of obs=mean×no. of obs
=78.5×35=2747.5
new mean=2747.5-68+86/35
=2765.5/35
=79.014
correct mean is 79.014
=78.5×35=2747.5
new mean=2747.5-68+86/35
=2765.5/35
=79.014
correct mean is 79.014
Similar questions