如果按隨機分布的規律取樣，你的家人也應該有相同的比例。

來源: 薛成於 2017-06-13 16:08:36 [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.