Question

Calculați media aritmetica ponderata a numerelor a=5,3 si b=7,4 care au ponderile 2 respectiv 3

Answer 1

$mp= \frac{5.3*2+7.4*3}{2+3} =\frac{10.6+22.2}{5} = \frac{32.8}{5} =6.56$

Answer 2

$m_{p}=\frac{5,3\cdot2+7,4\cdot3}{2+3}=\frac{10.6+22,2}{5}=6,56$