Chrome，
QQ浏览器
-
-
-
-
-
-
-
![[基础]高中数学必修第二册 9.1随机抽样](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F0773418eb939d33e1b970b14560ebdbf92e55cf9.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
![[基础]高中数学必修第二册 9.2用样本估计总体（一）](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F2316c5b6c57ee9290c710041ba26699653e89f4a.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
-
-
-
播放：11 时间：2024-06-20简介： -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
![[基础]高中数学必修第二册 9.1随机抽样](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F0773418eb939d33e1b970b14560ebdbf92e55cf9.jpg%40672w_378h_1c_%21web-search-common-cover)
![[基础]高中数学必修第二册 9.2用样本估计总体（一）](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F2316c5b6c57ee9290c710041ba26699653e89f4a.jpg%40672w_378h_1c_%21web-search-common-cover)
.