Question

Cum se calculeaza media aritmetica ponderata :
1/3 , 1/6 , 3/8 cu ponderile 2, 3 si 4
0,5 , 1,12 , 3,2 , 4 cu ponderile 3 , 4 , 5 si 8

Answer 1

(1/3*2+1/6*3+3/8*4)/(2+3+4)
(2/3+3/6+12/8)/9
2/3+4/2)/9
11/6/9
11/54=0,2(037)

0,5*3+1,12*4+3,2*5+4*8/(3+4+5+8)
1,5+4,48+15+32)/20
52,98/20
2,649