The mean of 10 observation is 15. If an observation 24 is deleted , find the mean of the remaining observation
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Mean of 10 data is 15
So the total is 10*15=150
24 is removed so the total changes to 150-24=126
and no. of observations changes to 9
New mean = 126/9=14
Answer=14
So the total is 10*15=150
24 is removed so the total changes to 150-24=126
and no. of observations changes to 9
New mean = 126/9=14
Answer=14
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