Question

Calculati media aritmetica ponderata a numerelor
$\frac{3}{5}$
$\frac{4}{11}$
$\frac{1}{2}$
$\frac{13}{3}$
Cu ponderile 5 ,11 ,6 respectiv 3
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Answer 1

Bună!

Media aritmetică ponderată = (p1×a1+p2×a2+...)/p1+p2+...

Rezolvare: (5×3/5+11×4/11+6×1/2+3×13/3)/5+11+6+3

(15/5+44/11+6/2+39/3)/25

(3+4+3+13)/25

23/25

Mult succes!