Question

media aritmetica ponderata a numerelor 0,25;4,5; 0,05 cu ponderile 3,2,5


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Answer 1

$m_p=\frac{a_1\times p_1+a_2\times p_2+...+a_n\times p_n}{p_1+p_2+...+p_n}\\\\m_p=\frac{0.25\times 3+4.5\times 2 +0.05\times5}{3+2+5}\\m_p=\frac{0.75+9+0.25}{10} \\m_p=\frac{10}{10\\}\\m_p=1$