the mean of 11 observations is 17.5. if an observations 15 is deleted, then find the mean of remaining observations.
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Answer:
17.75
Step-by-step explanation:
sum of observation =11×17.5=192.5
if one observation value 15 is deleted then new sum of observation will be
192.5-15=177.5
and the no. of observation will decrease by 1
I. e. 10
new mean = 177.5/10
=17.75
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