Question

Media aritmetica ponderata a numerelor 2 , 8 , 4 cu ponderile 4 , 2 si 4 este egala cu ...

Answer 1

$m_{ponderata} = \frac{2*4+8*2+4*4}{4+2+4} = \frac{8+16+16}{10} = \frac{40}{10} =4$

Answer 2

mp = ( 2 x 4  + 8 x 2 + 4 x 4  ) / 4 + 2 + 4 

mp = ( 8 + 16 + 16 ) / 10

mp = 40 / 10

mp = 4