the mean of 15 numbers is 42 out of this observation if the mean of first 8 observation is 40 and that of last 8 observations is 44 find the 8th observation
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Mean of 15 observation = 42*15= 630
Sum of first eight observations = 40*8=320
Sum of last eight observations =44*8=352
Sum of eight observations =(320+352-630)=42
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Sum of first eight observations = 40*8=320
Sum of last eight observations =44*8=352
Sum of eight observations =(320+352-630)=42
I hope it can help you So please mark as brainliest
Rahika1:
thanks
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