Tn dng qun c bit M¨¢ch bn mt s mo chi k¨¨o c hi k¨¦p hiu qu Nh C¨¢c bn bit th¨¬ c¨¢c yu t nh phong , th mn bt ch¨ªnh, ¡­ c¨® nh hng khng nh n kt qu trn u. Nhng ngi nm gi thng tin b¨ºn l lun c¨® li th khng nh. Ty l¨º thng khung Bn d d¨¤ng tham gia v¨¤o tr¨° chi n¨¤y mi l¨²c mi ni thng qua mt thit b in t kt ni mng internet m¨¤ khng cn phi n tn s¨°ng. Giao din trc quan, thn thin, c thit k n gin n¨ºn rt d s dng. ¡°Xm¡± l¨¤ t¨¬nh hung khi mt ngi chi ¨¢nh qun c¨® gi¨¢ tr thp nh qun ba, to ra mt t¨¬nh hung kh¨® khn m¨¤ tt c nhng ngi chi kh¨¢c u phi ¨¢nh l¨¢ c¨® gi¨¢ tr cao hn i ph¨®. Da v¨¤o kt qu XSKT gii c bit ng¨¤y th 2 Kt lun ¨¢nh 2 l: [1 ¨C [(100 ¨C 2)% m 27)] x 10 = 42%. V¨ª d in h¨¬nh nh: Bn t cc cho k¨¨o l¨¤ 1 triu ng v¨¤ k¨¨o h¨°a c¨® t l l¨¤ 3.1 th¨¬: Thiu kim so¨¢t cm x¨²c C¨¢ cc theo hip u

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