The mean of 10 observations is 9.5 and the mean of 25 other observations is 13 . Calculate the mean of 35 observations taken together.
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Mean of 35 observations = (mean of 10 observation + mean of 25 observation)\2
=( 9.5 + 13 )\2
= 11.25
wish it helps : )
=( 9.5 + 13 )\2
= 11.25
wish it helps : )
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