四川大学《卫生统计学1507》19春在线作业2（含答案）

网院作业 · 发表于 2019-5-23 10:55:37

《卫生统计学1507》19春在线作业2
1.[单选题]小概率事件在统计学上的含义是（）

奥鹏在线作业答案
奥鹏四川大学作业
A.指的是发生概率P≤0.5的随机事件
B.指一次实验或者观察中绝对不发生的事件
C.在一次实验或者观察中发生的可能性很小的事件，一般指P≤0.05
D.以上说法均不正确
E.A和C正确
正确答案:——C——
2.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="72" width="474" alt="" src="http://file.open.com.cn/ItemDB/25389/def58dbc-5755-45cb-a824-d69871b2ab3e/200858142045673.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:——C——
3.[单选题]下列关于医学参考值范围的说法中正确的是（）
A.医学参考值范围是根据大部分“健康人”的某项指标制定的
B.医学参考值范围的制定方法不受分布资料类型的限制
C.在制定医学参考值范围时，最好用95％范围，因为这个范围最能说明医学问题
D.在制定医学参考值范围时，最好用95％范围，因为这样比较好计算
E.以上说法均不正确
正确答案:——A——
4.[单选题]标准误越小，说明此次抽样所得样本均数（）
A.离散程度越小
B.可比性越好
C.可靠程度越小
D.系统误差越小
E.抽样误差越小
正确答案:————
5.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="54" width="471" alt="" src="http://file.open.com.cn/ItemDB/25389/d255a99d-5005-4bd7-bf4e-b259d35b09bd/200858142713763.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
6.[单选题]t分布与正态分布的关系是（）
A.均以0为中心，左右对称
B.总体均数增大时，分布曲线的中心位置均向右移动
C.曲线下两端5%面积对应的分位点均是±1.96
D.随样本含量的增大，t分布逼近标准正态分布
E.样本含量无限增大时，二者分布完全一致
正确答案:————
7.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="57" width="477" alt="" src="http://file.open.com.cn/ItemDB/25389/bdb0b240-12fa-44e9-b994-d91d536ddcb9/200858144620894.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
8.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="193" width="474" alt="" src="http://file.open.com.cn/ItemDB/25389/d9ba60de-556a-4c19-83dd-3e2e2829c290/200858142133190.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
9.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="61" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/4082e959-55af-4dc0-98a4-bff8a496a037/200858141127548.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
10.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="211" width="484" alt="" src="http://file.open.com.cn/ItemDB/25389/5fde5ba8-e23a-4f55-88cf-ab56bdd72ffe/200858145321751.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
11.[单选题]两样本的秩和检验与t检验相比（ ）
A.秩和检验比t检验好
B.检验效能相同
C. t检验比秩和检验好
D.应根据资料决定优劣
E.以上均不对
正确答案:————
12.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="158" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/1523b6ce-3780-4a28-b15b-523d2c9d8938/200858143928803.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
13.[单选题]假设将一个正态分布的资料所有的原始数据都加上一个正数，下列说法正确的是（）
A.均数将增大，标准差不改变
B.均数和标准差均增大
C.均数不变，标准差增大
D.不一定
E.均数和标准差均没有变化
正确答案:————
14.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="61" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/2eea4e74-cfdd-47e8-a9aa-3238a2a8ab5f/20085814106188.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
15.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="140" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/5c9b80dd-2c7d-45c2-ab7d-20de8d4d7b6a/20085814172110.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
16.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="61" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/9e355bfa-e859-4906-a980-db5257c4ea37/20085814849952.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
17.[单选题]为了制定尿铅的正常值范围，测定了一批正常人的尿铅含量，下列哪种说法正确（）
A.无法制定，要制定正常值范围必须测定健康人的尿铅含量
B.可以制定，应为单侧上限
C.可以制定，应为单侧下限
D.可以制定，但是无法确定是上侧范围还是下侧范围
E.可以制定双侧95％的参考值范围
正确答案:————
18.[单选题]方差分析中，组间变异主要反映（ ）
A.随机误差
B.抽样误差
C.测量误差
D.个体差异
E.处理因素的作用
正确答案:————
19.[单选题]两样本比较的秩和检验要求的条件是（ ）
A.计量资料
B.两总体都是正态分布
C.两总体方差相等
D.两样本例数要很大
E.以上均不要求
正确答案:————
20.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="108" width="466" alt="" src="http://file.open.com.cn/ItemDB/25389/a9530161-b796-4584-a8de-331365df7426/200858143218476.JPG" />

A.A
B.B
C.C
D.D
正确答案:————
21.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="167" width="469" alt="" src="http://file.open.com.cn/ItemDB/25389/ad33171a-3938-4eae-a907-166b1324a829/200858144352624.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
22.[单选题]统计资料的类型可以分为（）
A.定量资料和等级资料
B.分类资料和等级资料
C.正态分布资料和离散分布的资料
D.定量资料和分类资料
E.二项分布资料和有序分类资料
正确答案:————
23.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="117" width="476" alt="" src="http://file.open.com.cn/ItemDB/25389/f7f51c13-b601-4466-bafe-d55f7e83daec/200858145134170.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:———— 奥鹏作业答案
奥鹏四川大学作业
24.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="56" width="457" alt="" src="http://file.open.com.cn/ItemDB/25389/c773e142-6a54-4857-9377-4914b04b2833/200858143051567.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
25.[单选题]标准差与标准误的关系中，正确的是（）
A.二者均反映抽样误差的大小
B.总体标准差不变时，增大样本例数可以减小标准误
C.总体标准差增大时，总体的标准误也增大
D.样本例数增大时，样本的标准差和标准误都会减小
E.标准差用于计算可信区间，标准误用于计算参考值范围
正确答案:————
26.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="61" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/e3d92348-a351-44c8-b176-b3d588a0176b/200858141551836.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
27.[单选题]下列关于变异系数的说法，错误的是（）
A.与标准差一样都是用来描述资料变异程度的指标，都有单位
B.可以比较计量单位不同的几组资料的离散程度
C.可以比较均数相差悬殊的几组资料的离散程度
D.变异系数的实质是同一个资料的标准差与均数的比值
E.变异系数可以用来描述正态分布资料的变异程度
正确答案:————
28.[单选题]下列哪个说法是统计推断的内容（）
A.区间估计和点估计
B.参数估计与假设检验
C.统计预测和统计控制
D.统计描述和统计图表
E.参数估计和统计预测
正确答案:————
29.[单选题]下列关于标准差的说法中哪种是错误的（）
A.对于同一个资料，其标准差一定小于均数
B.标准差一定大于0
C.同一个资料的标准差可能大于均数，也可能小于均数
D.标准差可以用来描述正态分布资料的离散程度
E.如果资料中观察值是有单位的，那么标准差一定有相同单位
正确答案:————
30.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="113" width="471" alt="" src="http://file.open.com.cn/ItemDB/25389/dff6ddb8-af59-4346-a7f6-34309b1ff8d0/200858142812172.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
31.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="105" width="484" alt="" src="http://file.open.com.cn/ItemDB/25389/7d834149-d99f-480f-b85e-501f90932469/200858145647148.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
32.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="158" width="471" alt="" src="http://file.open.com.cn/ItemDB/25389/f6864eeb-e0b6-4852-be46-9f05c337f0ee/20085814290251.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
33.[单选题]关于频数表的说法正确的是（）
A.都分为10个组段
B.每一个组段必须组距相等
C.从频数表中可以初步看出资料的频数分布类型
D.不是连续型的资料没有办法编制频数表
E.频数表中的每一个组段不一定是半开半闭的区间，可以任意指定
正确答案:————
34.[单选题]用下列哪两个指标可以较全面地描述正态分布特征（）
A.均数和中位数
B.中位数和方差
C.均数和四分位数间距
D.均数和标准差
E.几何均数和标准差
正确答案:————
35.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="184" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/13ea12df-e737-47ed-8131-f33acdf17ea7/200858141939718.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
36.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="184" width="484" alt="" src="http://file.open.com.cn/ItemDB/25389/272b539f-fdb7-498b-944b-e7d39dc7cd85/20085814522531.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
37.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="158" width="477" alt="" src="http://file.open.com.cn/ItemDB/25389/1a05f615-abc3-4f2b-afe6-1cc4eaff5834/200858144822179.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
38.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="61" width="468" alt="" src="http://file.open.com.cn/ItemDB/25389/01b4753b-f1b9-4c32-af44-8141746d15ed/200858141637431.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
39.[单选题]下列哪个资料适宜用几何均数来描述其集中趋势（）
A.偏态分布的资料
B.对称分布的资料
C.等比级数资料
D.一端不确定的资料
E.正态分布资料
正确答案:————
40.[单选题]<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">题面如图所示：
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img height="132" width="471" alt="" src="http://file.open.com.cn/ItemDB/25389/9c2de441-0cbf-466b-a29d-757983edfa6e/200858142741749.JPG" />

A.A
B.B
C.C
D.D
E.E
正确答案:————
奥鹏19春答案
奥鹏四川大学作业

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