Bonsoir,
étendue = 90 - 10 = 80
médiane = 40
moyenne = (5×10 + 7×20 + 9×40 + 3×50 + 5×90) ÷ (5+7+9+3+5)
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Bonsoir,
étendue = 90 - 10 = 80
médiane = 40
moyenne = (5×10 + 7×20 + 9×40 + 3×50 + 5×90) ÷ (5+7+9+3+5)