Question

calcular a média aritmétrica ponderada dos numeros 30,15 e 8, considerando peso 2?​

Answer 1

$\displaystyle Mp = \frac{\displaystyle\sum_{i=1}^{n} x_ip_i}{\displaystyle\sum_{i=1}^{n} p_i}\\\\\\Mp = \frac{(x_1 * p_1) + (x_2 * p_2) + ... + (x_n * p_n)}{p_1 + p_2 + ... + p_n}\\\\\\Mp = \frac{(30 * 2) + (15 * 2) + (8 * 2)}{2 + 2 + 2}\\\\Mp = \frac{60 + 30 + 16}{6}\\\\Mp = \frac{106}{6}\\\\Mp = 17,666...$