chance for 4 straght-correct = 0.5*0.5*0.5*0.5

来源: DJI30SP500 于 2013-12-20 11:03:58 [] [旧帖] [给我悄悄话] 阅读数 : 0 (0 bytes)

所有跟帖： 

• why 0.5? -多空云雨- ♂ 给 多空云雨 发送悄悄话 (0 bytes) () 12/20/2013 postreply 11:05:25

• either up or down,no one can 100% sure the direction -DJI30SP500- ♂ 给 DJI30SP500 发送悄悄话 (0 bytes) () 12/20/2013 postreply 11:08:24

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