Question

Calculati media aritmetica ponderata a numerelor 2 si 3 cu ponderile2, respectiv 3.

Answer 1

$m=\frac{p1*n1+p2*n2}{p1+p2}=\frac{2*2+3*3}{2+3}=\frac{13}{5}=2.6$

Answer 2

(2*2+3*3):(2+3)=(4+9):5=13:5=2,6(media ponderata)