Question

O quadro a seguir apresenta as notas dos alunos do 8º ano na última prova de matemática.

Determine a média, a moda e a mediana desses dados.

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Answer 1

Resposta:

Explicação passo a passo:

média = $\frac{2,5 . 2 + 3,0 . 5 + 4,0 . 3 + 4,5 . 3 + 5,0 . 8 + 6,0 . 6 + 6,5 . 3 + 7,0 . 4 + 8,0 . 2}{40} => \frac{5,0 + 15,0 + 12,0 + 13,5 + 40,0 + 36,0 + 19,5 + 28,0 + 16,0 }{40} => \frac{185 }{40} => 4,625$Moda = 5,0

mediana = 6,0