pls help me to find out the answer pls
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Answer:
Toltal no. Of frequency=6+7+9+12+x=34+x
Here total no. Of xi= 120+30x+300+490+810=1720+x
Mean= xi/fi
=44= 1720+x/34+x
= 1496+44x= 1720+ x
= 224= 43x
=51.2
Hope this help you
Anonymous:
Is it correct?
I donot know what is the answer but i try my best
thanks
wrong 90 and 9 is
but all other is right
because I have did half
This is wrong then what is the answer dear
plz tell
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