Question

If u are a genius then answer this :-
no. of children : 0,1,2,3,4,5.
no. of families : 11,25,32,10,5,1.
Find the mean number of children per family.

Answer 1

the no. of the children per families= 11*0+25*1+32*2+10*3+5*4+1*5/11+25+32+10+5+1
=0+25+64+30+20+1/36+42+6
=89+51/78+6
=140/84
=1.67