2022年必修三统计高考真题 .pdf
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1、20XX年 04 月 19 日的高中数学组卷一选择题(共11小题)1为了解某社区居民的家庭年收入与年支出的关系,随机调查了该社区5 户家庭,得到如下统计数据表:收入 x(万元)8.28.610.011.311.9支出 y(万元)6.27.58.08.59.8根据上表可得回归直线方程,其中,据此估计,该社区一户收入为 15 万元家庭年支出为()A11.4 万元B11.8 万元C 12.0 万元D12.2 万元2已知变量 x 与 y 正相关,且由观测数据算得样本平均数=3,=3.5,则由该观测数据算得的线性回归方程可能是()A=0.4x+2.3 B=2x2.4 C =2x+9.5 D=0.3x+4
2、.43根据如下样本数据,得到回归方程=bx+a,则()x345678y4.02.50.50.52.03.0Aa0,b0 Ba0,b0 C a0,b0 Da0,b04某学校为了了解三年级、六年级、九年级这三个年级之间的学生视力是否存在显著差异,拟从这三个年级中按人数比例抽取部分学生进行调查,则最合理的抽样方法是()A抽签法B系统抽样法C分层抽样法D随机数法5根据如图给出的至 20XX年我国二氧化硫年排放量(单位:万吨)柱形图,以下结论中不正确的是()A逐年比较,减少二氧化硫排放量的效果最显著B 我国治理二氧化硫排放显现成效C 以来我国二氧化硫年排放量呈减少趋势D 以来我国二氧化硫年排放量与年份正
3、相关6重庆市 20XX年各月的平均气温()数据的茎叶图如,则这组数据的中位数是()A19 B20 C 21.5 D237 在一次马拉松比赛中,35 名运动员的成绩(单位:分钟)的茎叶图如图所示 若将运动员按成绩由好到差编为135 号,再用系统抽样方法从中抽取7 人,则其中成绩在区间 139,151 上的运动员人数是()A3 B4 C 5 D68若样本数据x1,x2,x10的标准差为 8,则数据 2x11,2x21,2x101 的标准差为()A8 B15 C 16 D329为了研究某药品的疗效,选取若干名志愿者进行临床试验所有志愿者的舒文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
4、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
5、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
6、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
7、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
8、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
9、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
10、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1张压数据(单位:kPa)的分组区间为 12,13),13,14),14,15),15,16),16,17,将其按从左到右的顺序分别编号为第一组,第二组,第五组如图是根据试验数据制成的频率分布直方图已知第一组与第二组共有20 人,第三组中没有疗效的有6 人,则第三组中有疗效的人数为()A6 B8 C 12 D1810某单位有 840 名职工,现采用系统抽样方法,抽取 42 人做问卷调查,将 840人按 1,2,840
11、随机编号,则抽取的42 人中,编号落入区间 481,720 的人数为()A11 B12 C 13 D1411一个单位有职工 800 人,期中具有高级职称的160 人,具有中级职称的320人,具有初级职称的 200 人,其余人员 120 人为了解职工收入情况,决定采用分层抽样的方法,从中抽取容量为40 的样本则从上述各层中依次抽取的人数分别是()A12,24,15,9 B9,12,12,7 C8,15,12,5 D8,16,10,6二解答题(共7 小题)12某公司为确定下一年度投入某种产品的宣传费,需了解年宣传费x(单位:千元)对年销售量y(单位:t)和年利润 z(单位:千元)的影响,对近8 年
12、的年宣传费 xi和年销售量 yi(i=1,2,8)数据作了初步处理,得到下面的散点图及一些统计量的值文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
13、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
14、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
15、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
16、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9
17、U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 Z
18、V6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1(xi)2(wi)2(xi)(yi)(wi)(yi)46.65636.8289.81.61469108.8表中 wi=i,=()根据散点图判断,y=a+bx与 y=c+d哪一个适宜作为年销售量y 关于年宣传费 x 的回归方程类型?(给出判断即可,不必说明理由)
19、()根据()的判断结果及表中数据,建立y 关于 x 的回归方程;()已知这种产品的年利润z 与 x、y 的关系为 z=0.2yx根据()的结果回答下列问题:(i)年宣传费 x=49时,年销售量及年利润的预报值是多少?(ii)年宣传费 x 为何值时,年利润的预报值最大?附:对于一组数据(u1 v1),(u2 v2).(un vn),其回归线 v=+u 的斜率和截距的最小二乘估计分别为:=,=13如图是我国至 20XX 年生活垃圾无害化处理量(单位:亿吨)的折线文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5
20、ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X
21、9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5
22、ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X
23、9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5
24、ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X
25、9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5 ZV6A6J6W8T1文档编码:CO5X9U8R5G2 HY1C9A5X5P5
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