一点统计学的原理都不懂，就别老说外行话丢人啦！

来源: hardfox 于 2010-02-22 20:10:35 [旧帖] [给我悄悄话] 本文已被阅读：次

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