find the frequencies for the following distribution if the mean of the distribution is 34
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xi fi xifi
10 4 40
20 f1 20f1
30 8 240
40 f2 40f2
50 3 150
60 4 240
mean=∑xifi/∑fi
34 =40+20f1+240+40f2+150+240/15+f1+f2
34(15+F1+F2)=670+20F1+40F2
LETS EQUATE F1 AND F2 TO F
510+68F=670+60F
8F=160
F=20
F1=20
F2=20
THATS ALL WE CAN DO
10 4 40
20 f1 20f1
30 8 240
40 f2 40f2
50 3 150
60 4 240
mean=∑xifi/∑fi
34 =40+20f1+240+40f2+150+240/15+f1+f2
34(15+F1+F2)=670+20F1+40F2
LETS EQUATE F1 AND F2 TO F
510+68F=670+60F
8F=160
F=20
F1=20
F2=20
THATS ALL WE CAN DO
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