写出下面各组数的众数、中位数、平均数.(1)90,80,90,75,82.(2)15,15,12,18,15,16,18,20.(3)9.3,9.0,8.8,8.5,8.8,9.2,9.5,8.8,7.0,8.8.
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![写出下面各组数的众数、中位数、平均数.(1)90,80,90,75,82.(2)15,15,12,18,15,16,18,20.(3)9.3,9.0,8.8,8.5,8.8,9.2,9.5,8.8,7.0,8.8.](/uploads/image/z/1339939-19-9.jpg?t=%E5%86%99%E5%87%BA%E4%B8%8B%E9%9D%A2%E5%90%84%E7%BB%84%E6%95%B0%E7%9A%84%E4%BC%97%E6%95%B0%E3%80%81%E4%B8%AD%E4%BD%8D%E6%95%B0%E3%80%81%E5%B9%B3%E5%9D%87%E6%95%B0.%EF%BC%881%EF%BC%8990%2C80%2C90%2C75%2C82.%EF%BC%882%EF%BC%8915%2C15%2C12%2C18%2C15%2C16%2C18%2C20.%EF%BC%883%EF%BC%899.3%2C9.0%2C8.8%2C8.5%2C8.8%2C9.2%2C9.5%2C8.8%2C7.0%2C8.8.)
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