Question

calculeaza media aritmetica ponderata a numerelor: a) 8, 5, 7 cu ponderile 1, 1.5, 2 b) 0.7, 0.8, 0.9, 1 cu ponderile 2, 3, 4, 7 c) 3, 4, 5, 6 cu ponderile 1, 2, 3, 4​

Answer 1

Răspuns:

a.

$\frac{8 + 5 + 7}{1 + 1.5 + 2} = \frac{20}{4.5} = \frac{40}{9}$

b.

$\frac{0.7 + 0.8 + 0.9 + 1}{2 + 3 + 4 + 7} = \frac{3.4}{16}$

c.

$\frac{3 + 4 + 5 + 6}{1 + 2 + 3 + 4} = \frac{18}{10}$