If there are two groups containing 30 and 20 observations and having 50 and 60 as arithmetic means, then the combines average is:
In my opinion, it is 54..if you think anything else, please state how??
THANKS in ADVANCE
If there are two groups containing 30 and 20 observations and having 50 and 60 as arithmetic means, then the combines average is:
In my opinion, it is 54..if you think anything else, please state how??
THANKS in ADVANCE
Avrage is 80.
satvir i think u r right..
it should be 54 only...
yeah, it should be 54. but model test paper is showing 56 as correct answer
30*50=1500
20*60=1200
1500+1200=2700
2700/50=54
i think you are right
ya it is 54.by mistake d ans mst hav been printen 56
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