統計不徹底，請問樣本防差多少？

來源: 賈平凸於 2011-10-27 08:56:47 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.