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2014-04-27T21:39:27+07:00
13 + 8 + X + 13 + 8 + 11 + 14 + 11 + 7 : 9 = 11, 85 + X = 11 x 9, X = 99 - 85, X = 14, jadi median data tersebut = 7,8,8,11,11,13,13,14,14 = 11
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