本课配套习题挑战模式1/5
在“世界读书日”前夕,为了了解某地名居民某天的阅读时间,从中抽取了名居民的阅读时间进行统计分析。在这个问题中,名居民的阅读时间的全体是( )
A: 总体 |
B: 个体 |
C: 样本的容量 |
D: 从总体中抽取的一个样本 |
- 提示1:PHA+5LuONTAwMOS7veS4reaKveWPljIwMOS7ve+8jOagt+acrOeahOWuuemHj+aYrzIwMO+8jOaKveWPlueahDIwMOS7veaYr+S4gOS4quagt+acrO+8jDwvcD4=
- 提示2:PHA+5q+P5Liq5bGF5rCR55qE6ZiF6K+75pe26Ze05bCx5piv5LiA5Liq5Liq5L2T77yMPC9wPg==
- 提示3:PHA+NTAwMOWQjeWxheawkeeahOmYheivu+aXtumXtOeahOWFqOS9k+aYr+aAu+S9kzwvcD4=
- 答案:QQ==
PHA+5LuONTAwMOS7veS4reaKveWPljIwMOS7ve+8jOagt+acrOeahOWuuemHj+aYrzIwMO+8jOaKveWPlueahDIwMOS7veaYr+S4gOS4quagt+acrO+8jOavj+S4quWxheawkeeahOmYheivu+aXtumXtOWwseaYr+S4gOS4quS4quS9k++8jDUwMDDlkI3lsYXmsJHnmoTpmIXor7vml7bpl7TnmoTlhajkvZPmmK/mgLvkvZMu5omA5Lul6YCJQS48L3A+
本课配套习题挑战模式2/5
某市有大型超市200家、中型超市400家、小型超市1400家,为掌握各类超市的营业情况,现按分层抽样方法抽取一个容量为100的样本,应抽取中型超市( )
A: 70家 |
B: 50家 |
C: 20家 |
D: 10家 |
- 提示1:PHA+5YiG5bGC5oq95qC3PC9wPg==
- 答案:Qw==
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
本课配套习题挑战模式3/5
某高中学校采用系统抽样方法,从该校全体800名学生中抽50名学生做牙齿健康检查.现将800名学生从1到800进行编号,求得间隔数k=16,即每16人抽取一个人.在1~16中随机抽取一个数,如果抽到的是7,则从33 ~ 48这16个数中应取的数是( )
A: 40 |
B: 39 |
C: 38 |
D: 37 |
- 提示1:PHA+57O757uf5oq95qC35Y+I5Y+r562J6Led5oq95qC3PGJyPjwvcD4=
- 答案:Qg==
PHA+6Kej77ya55Sx5LqOPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzQ3LzU5L3JCQUNKMVRaVmVYaHZ1ZDJBQUFDa09qOTdKRTA3NC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNDcvNTkvckJBQ0oxVFpWZVhodnVkMkFBQUNrT2o5N0pFMDc0LnBuZyIgaGVpZ2h0PSIxOSIgd2lkdGg9IjkzIj7vvIzlm6DmraTpgIlC77yOPGJyPjwvcD4=
本课配套习题挑战模式4/5
用样本的频率分布来估计总体情况时,下列选项中正确的是( )
A: 估计准确与否与样本容量无关 |
B: 估计准确与否只与总体容量有关 |
C: 样本容量越大,估计结果越准确 |
D: 估计准确与否只与所分组数有关 |
- 提示1:PHA+5qC35pys5a656YeP56uZ5oC75L2T55qE5q+U5L6L6LaK5aSn77yM5Lyw6K6h6LaK5YeG56GuPGJyPjwvcD4=
- 答案:Qw==
PHA+6Kej77ya55So5qC35pys55qE6aKR546H5YiG5biD5Lyw6K6h5oC75L2T5oOF5Ya15pe277yM5omA5Y+W5b6X55qE5qC35pys55qE5a656YeP6LaK5aSn77yM5YiG57uE5pe257uE5pWw6LaK5aSa77yM5a+55bqU55qE57uE6Led6LaK5bCP77yM5b6X5Yiw55qE6aKR546H5oqY57q/5Zu+6LaK5o6l6L+R5oC75L2T5a+G5bqm5puy57q/77yM5oC75L2T5a+G5bqm5puy57q/5Y+N5pig5LqG5oC75L2T5Zyo6L+Z5Liq6IyD5Zu05YaF55qE5Y+W5LmL55qE55m+5YiG5q+U77yO5omA5Lul5qC35pys5a656YeP6LaK5aSn5Lyw6K6h55qE57uT5p6c6LaK5YeG56Gu77yOPGJyPjwvcD4=
本课配套习题挑战模式5/5
为了解某地区的中小学生视力情况,拟从该地区的中小学生中抽取部分学生进行调查,事先已了解到该地区小学、初中、高中三个学段学生的视力情况有较大差异,而男女视力情况差异不大.在下面的抽样方法中,最合理的抽样方法是( )
A: 简单随机抽样 |
B: 按性别分层抽样 |
C: 按学段分层抽样 |
D: 系统抽样 |
- 提示1:PHA+54m55b6B5Yy65YiG5piO5pi+PC9wPg==
- 答案:Qw==
PHA+6Kej77ya5LiN5ZCM55qE5a2m5q615Zyo6KeG5Yqb54q25Ya15LiK5pyJ5omA5beu5byC77yM5omA5Lul5bqU6K+l5oyJ54Wn5a2m5q615YiG5bGC5oq95qC377yOPGJyPjwvcD4=