超星statistics章节答案(学习通2023题目答案)

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Chapter 1 Introduction to statistics

quizzes 1

1、超星In a questionnaire,章节 respondents are asked to mark their gender as male or female. Gender is an example of the（ ）
A、ordinal scale
B、答案nominal scale
C、学习ratio scale
D、通题interval scale

2、目答In a questionnaire,超星 respondents are asked to mark their gender as male or female. Gender is an example of the（ ）
A、ordinal scale
B、章节nominal scale
C、答案ratio scale
D、学习interval scale

3、通题The目答 nominal scale of measurement has the properties of the（ ）.
A、ordinal scale
B、超星only interval scale
C、章节ratio scale
D、答案None of these alternatives is correct.

4、The scale of measurement that is used to rank order the observation for a variable is called the（ ）.
A、ratio scale
B、ordinal scale
C、nominal scale
D、interval scale

5、Some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. This is an example of the（ ）.
A、ordinal scale
B、ratio scale
C、nominal scale
D、interval scale

6、The ordinal scale of measurement has the properties of the（ ）.
A、ratio scale
B、interval scale
C、nominal scale
D、ratio and interval scales

7、The ratio scale of measurement has the properties of（ ）.
A、only the ordinal scale
B、only the nominal scale
C、the rank scale
D、the interval scale

8、The interval scale of measurement has the properties of the（ ）.
A、ratio and nominal scales
B、ratio and ordinal scales
C、ratio scale
D、None of these alternatives is correct.

9、Data obtained from a nominal scale（ ）.
A、must be alphabetic
B、can be either numeric or nonnumeric
C、must be numeric
D、must rank order the data

10、The scale of measurement that has an inherent zero value defined is the（ ）.
A、ratio scale
B、nominal scale
C、ordinal scale
D、interval scale

11、Quantitative data refers to data obtained with a(n)（ ）.
A、ordinal scale
B、nominal scale
C、either interval or ratio scale
D、only interval scale

12、The entities on which data are collected are（ ）.
A、elements
B、populations
C、samples
D、None of these alternatives is correct.

13、The set of measurements collected for a particular element is (are) called（ ）.
A、variables
B、observations
C、samples
D、None of these alternatives is correct.

14、A characteristic of interest for the elements is called a(n)（ ）.
A、sample
B、data set
C、variable
D、None of these alternatives is correct.

15、All the data collected in a particular study are referred to as the（ ）.
A、inference
B、variable
C、data set
D、None of these alternatives is correct.

16、Another name for "observations" is（ ）.
A、views
B、variables
C、cases
D、None of these alternatives is correct.

17、Quantitative data（ ）.
A、are always nonnumeric
B、may be either numeric or nonnumeric
C、are always numeric
D、None of these alternatives is correct.

18、Ordinary arithmetic operations are meaningful（ ）.
A、only with categorical data
B、only with quantitative data
C、either with quantitative or categorical data
D、None of these alternatives is correct.

19、Social security numbers consist of numeric values. Therefore, social security is an example of（ ）.
A、a quantitative variable
B、either a quantitative or a categorical variable
C、an exchange variable
D、a categorical variable

20、For ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. In this case data are（ ）.
A、categorical
B、quantitative
C、either categorical or quantitative
D、neither categorical nor quantitative

21、Data collected at the same, or approximately the same, point in time are（ ）.
A、time series data
B、approximate time series data
C、crossectional data
D、approximate data

22、Data collected over several time periods are（ ）.
A、time series data
B、time controlled data
C、crossectional data
D、time crossectional data

23、The summaries of data, which may be tabular, graphical, or numerical, are referred to as（ ）.
A、inferential statistics
B、descriptive statistics
C、statistical inference
D、report generation

24、Statistical inference（ ）.
A、refers to the process of drawing inferences about the sample based on the characteristics of the population
B、is the same as descriptive statistics
C、is the process of drawing inferences about the population based on the information taken from the sample
D、is the same as a census

25、The collection of all elements of interest in a particular study is（ ）.
A、the population
B、the sampling
C、statistical inference
D、descriptive statistics

26、A portion of the population selected to represent the population is called（ ）.
A、statistical inference
B、descriptive statistics
C、a census
D、a sample

27、In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of（ ）.
A、a sample
B、a population
C、statistical inference
D、descriptive statistics

28、In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of（ ）.
A、a sample
B、a population
C、statistical inference
D、descriptive statistics

29、Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)（ ）.
A、census
B、sample
C、observation
D、population

30、A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of（ ）.
A、a census
B、descriptive statistics
C、an experiment
D、statistical inference

31、The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of（ ）.
A、a sample
B、descriptive statistics
C、statistical inference
D、an experiment

32、The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of（ ）.
A、descriptive statistics
B、statistical inference
C、a sample
D、a population

33、The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called（ ）.
A、descriptive statistics
B、statistical inference
C、data analysis
D、data summarization

34、In a post office, the mailboxes are numbered from 1 to 4,500. These numbers represent（ ）.
A、categorical data
B、quantitative data
C、either categorical or quantitative data
D、since the numbers are sequential, the data is quantitative

35、The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College（ ）.
A、must be more than 22, since the population is always larger than the sample
B、must be less than 22, since the sample is only a part of the population
C、could not be 22
D、could be larger, smaller, or equal to 22

36、Since a sample is a subset of the population, the sample mean（ ）.
A、is always smaller than the mean of the population
B、is always larger than the mean of the population
C、must be equal to the mean of the population
D、can be larger, smaller, or equal to the mean of the population

37、The scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the（ ）.
A、ratio scale
B、nominal scale
C、ordinal scale
D、interval scale

38、Which scale of measurement can be either numeric or nonnumeric?
A、nominal
B、ratio
C、interval
D、None of these alternatives is correct.

39、Which of the following variables use the ratio scale of measurement?
A、social security number
B、temperature
C、gender
D、income

40、The weight of a candy bar in ounces is an example of（ ）.
A、categorical data
B、either categorical or quantitative data
C、weight data
D、quantitative data

41、The height of a building, measured in feet, is an example of（ ）.
A、categorical data
B、either categorical or quantitative data
C、feet data
D、quantitative data

42、Census refers to（ ）.
A、an experimental study to collect data on the entire population
B、an experimental study to collect data on a sample
C、a survey to collect data on a sample
D、a survey to collect data on the entire population

43、In experimental studies, the variable of interest（ ）.
A、is not controlled
B、is controlled
C、must be numerical
D、cannot be numerical

44、In observational studies, the variable of interest（ ）.
A、is not controlled
B、is controlled
C、must be numerical
D、cannot be numerical

45、How many scales of measurement exist?
A、1
B、2
C、3
D、4

46、Which of the following can be classified as quantitative data?
A、interval and ordinal
B、ratio and ordinal
C、nominal and ordinal
D、interval and ratio

47、The sample size（ ）.
A、can be larger than the population size
B、is always smaller than the population size
C、can be larger or smaller than the population size
D、is always equal to the size of the population

48、A population is（ ）.
A、the same as a sample
B、the selection of a random sample
C、the collection of all items of interest in a particular study
D、always the same size as the sample

49、On a street, the houses are numbered from 300 to 450. The house numbers are examples of（ ）.
A、categorical data
B、quantitative data
C、both quantitative and categorical data
D、neither quantatative nor categorical data

50、A survey to collect data on the entire population is（ ）.
A、a census
B、a sample
C、a population
D、an inference

51、In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an （ ）.
A、ordinal scale
B、nominal scale
C、categorical variable
D、quantitative variable
E、None of these alternatives is correct.

52、Arithmetic operations are appropriate for（ ）
A、the ratio scale
B、the interval scale
C、categorical data
D、quantitative data
E、None of these alternatives is correct.

53、Income is an example of（ ）
A、a variable that uses the ratio scale
B、a variable that uses interval scale
C、categorical data
D、quantitative data
E、None of these alternatives is correct.

54、Categorical data（ ）
A、indicate either how much or how many
B、must be nonnumeric
C、may be either numeric or nonnumeric
D、are labels used to identify attributes of elements
E、None of these alternatives is correct.

55、Temperature is an example of （ ）
A、either a quantitative or categorical variable
B、a quantitative variable
C、a variable that uses the interval scale
D、a variable that uses either the ratio or the interval scale
E、None of these alternatives is correct.

56、Which of the following is not a scale of measurement?
A、ratio
B、interval
C、primal
D、divisional
E、remedial

57、Which of the following can be classified as quantitative data?
A、The height of a building, measured in feet.
B、The weight of a candy bar in ounces.
C、Income in dollars.
D、Social security numbers.
E、None of these alternatives is correct.

58、Which of the following variables use the interval scale of measurement?
A、social security number
B、temperature
C、height
D、income
E、latitude

59、Which scale of measurement can be either numeric or nonnumeric?
A、nominal
B、ratio
C、interval
D、ordinal
E、None of these alternatives is correct

60、Quantitative data may be either numeric or nonnumeric.

61、In experimental studies, the variable of interest is controlled.

62、A portion of the population selected to represent the population is called a census.

63、Arithmetic operations are inappropriate for either categorical or quantitative data.

64、Ordinary arithmetic operations are meaningful either with quantitative or categorical data.

65、Another name for "observations" is cases.

Chapter 2 Descriptive Statistics：Summarizing data using tabular and graphical techniques

quizzes 2

1、The collection of all elements of interest in a particular study is（ ）.
A、the population
B、the sampling
C、statistical inference
D、descriptive statistics

2、A portion of the population selected to represent the population is called（ ）.
A、statistical inference
B、descriptive statistics
C、a census
D、a sample

3、In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of（ ）.
A、a sample
B、a population
C、statistical inference
D、descriptive statistics

4、In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of（ ）.
A、a sample
B、a population
C、statistical inference
D、descriptive statistics

5、Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)（ ）.
A、census
B、sample
C、observation
D、population

6、A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of（ ）.
A、a census
B、descriptive statistics
C、an experiment
D、statistical inference

7、The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of（ ）.
A、a sample
B、descriptive statistics
C、statistical inference
D、an experiment

8、The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of（ ）.
A、descriptive statistics
B、statistical inference
C、a sample
D、a population

9、The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called（ ）.
A、descriptive statistics
B、statistical inference
C、data analysis
D、data summarization

10、In a post office, the mailboxes are numbered from 1 to 4,500. These numbers represent（ ）.
A、categorical data
B、quantitative data
C、either categorical or quantitative data
D、since the numbers are sequential, the data is quantitative

11、The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College（ ）.
A、must be more than 22, since the population is always larger than the sample
B、must be less than 22, since the sample is only a part of the population
C、could not be 22
D、could be larger, smaller, or equal to 22

12、Since a sample is a subset of the population, the sample mean（ ）.
A、is always smaller than the mean of the population
B、is always larger than the mean of the population
C、must be equal to the mean of the population
D、can be larger, smaller, or equal to the mean of the population

13、The scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the（ ）.
A、ratio scale
B、nominal scale
C、ordinal scale
D、interval scale

14、Which scale of measurement can be either numeric or nonnumeric?
A、nominal
B、ratio
C、interval
D、None of these alternatives is correct.

15、Which of the following variables use the ratio scale of measurement?
A、social security number
B、temperature
C、gender
D、income

16、The weight of a candy bar in ounces is an example of（ ）.
A、categorical data
B、either categorical or quantitative data
C、weight data
D、quantitative data

17、The height of a building, measured in feet, is an example of（ ）.
A、categorical data
B、either categorical or quantitative data
C、feet data
D、quantitative data

18、Census refers to（ ）.
A、an experimental study to collect data on the entire population
B、an experimental study to collect data on a sample
C、a survey to collect data on a sample
D、a survey to collect data on the entire population

19、In experimental studies, the variable of interest（ ）.
A、is not controlled
B、is controlled
C、must be numerical
D、cannot be numerical

20、In observational studies, the variable of interest（ ）.
A、is not controlled
B、is controlled
C、must be numerical
D、cannot be numerical

21、How many scales of measurement exist?
A、1
B、2
C、3
D、4

22、Which of the following can be classified as quantitative data?
A、interval and ordinal
B、ratio and ordinal
C、nominal and ordinal
D、interval and ratio

23、The sample size（ ）.
A、can be larger than the population size
B、is always smaller than the population size
C、can be larger or smaller than the population size
D、is always equal to the size of the population

24、A population is（ ）.
A、the same as a sample
B、the selection of a random sample
C、the collection of all items of interest in a particular study
D、always the same size as the sample

25、On a street, the houses are numbered from 300 to 450. The house numbers are examples of（ ）.
A、categorical data
B、quantitative data
C、both quantitative and categorical data
D、neither quantatative nor categorical data

26、A survey to collect data on the entire population is（ ）.
A、a census
B、a sample
C、a population
D、an inference

27、Temperature is an example of （ ）
A、either a quantitative or categorical variable
B、a quantitative variable
C、a variable that uses the interval scale
D、a variable that uses either the ratio or the interval scale
E、None of these alternatives is correct.

28、Which of the following is not a scale of measurement?
A、ratio
B、interval
C、primal
D、divisional
E、remedial

29、Categorical data（ ）
A、indicate either how much or how many
B、must be nonnumeric
C、may be either numeric or nonnumeric
D、are labels used to identify attributes of elements
E、None of these alternatives is correct.

学习通statistics

学习通statistics是由中国大学MOOC（慕课）平台推出的一门在线学习课程，它是针对统计学基础知识进行的教学，为初学者提供了一个系统学习统计学的机会。在这门课程中，学生可以学习到基础的概率和统计学方法，以及如何应用这些方法来解决实际问题。

课程内容

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• 概率论基础
• 随机变量及其分布
• 多维随机变量及其分布
• 参数估计
• 假设检验
• 方差分析
• 回归分析

这些模块涵盖了统计学中的基础知识，包括概率论、随机变量、参数估计、假设检验、方差分析和回归分析。学生可以掌握这些基础知识，并学会如何应用它们来解决实际问题。

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课程评价

学习通statistics是一门非常好的在线学习课程。该课程的教学资源丰富，学习方式灵活，教学团队实力雄厚，能够帮助学生快速掌握统计学基础知识，并能够应用到实际问题中。

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结论

学习通statistics是一门非常好的在线学习课程。它提供了一个系统学习统计学的机会，为初学者提供了非常好的入门课程。在这门课程中，学生可以掌握统计学的基础知识，并学会如何应用这些知识来解决实际问题。建议有兴趣的学生可以报名参加该课程，相信它会为你带来非常好的学习体验和收获。

关于原子轨道能量的影响因素，下列说法错误的是：

A.快运货物发到站间运输里程
B.以下各项中，属于合规性审计的是（ ）
C.PPT留白设计，是指颜色的白。
D.下雨天，仓库保管员可以将湿雨伞带入库房。

简报属于正式文书，对上级，可以代替“请示”、“报告”等

A.构成敏感陶瓷的主要物质属于
B.吸烟对碘的吸收利用没有关系。
C.在金融业上实现了相对的“无为而治”
D.在色环中，一个原色与相对应的间色(如红与绿、黄与紫、蓝与橙)互称为 。

数组的特点是,数组元素排列有序且数据类型相同.

A.在驻波中，两个相邻波节间各质元的振动
B.使用创新思维可以突破（ ）的界限，产生新颖独到的思维成果。
C.水分子通过_______的作用可与另4个水分子配位结合形成正四面体结构。
D.工资账套建立完毕后,部分建账参数可以在“设置”丨“选项”中进行修改

三端集成稳压电路的引出端分别是（

A.依法规定的内容和价值取向，法可以分为实体法和程序法
B.2.俗有“吓煞人香”美誉的是（）。
C.下列哪些陈述符合青少年的心理特点（ ）
D.以下有关应收账款函证的说法中，恰当的有

在数据库的三级模式结构中，内模式有：

A.在我国，普通居民用电分为火线和零线，两者之间存在着（ ）伏特的电压。
B.下列对HClO4及其盐有关问题的叙述，错误的是
C.在维新运动的推动下，当时形成了广泛的文化革新运动。
D.狩猎的历史悠久，随着时代的发展狩猎的目的不断增多，人类狩猎的目的有（ ）。

参加创业比赛,不仅要在心理上做好准备,也要( )。

A.Find an experienced driving instructor
B.资产阶级革命派的阶级基础是
C.根据我国信息技术教师发展实践，将外部任务和自身需要相结合，分为（ ）个阶段。
D.83.进程的控制信息和描述信息存放在( )。

人文社会科学研究具有客观性、主观性、()特点。

A.根据《灵枢邪气藏府病形》，邪气“中于颊则下少阳”（ )
B.下列哪个是徐氏拟裸茎吸虫病的症状
C.以插花素材的性质为标准分类，可将插花作品分为————。
D.折子戏《表花》出于那部秦腔作品

舒伯特的《第八交响曲》又名（）。

A.孔子说“知之者不如好之者，好之者不如乐之者”。这里的“乐”，体现了美育的( )
B.随着生产力的发展和滑冰技巧的提高，沈城冰鞋演变成双刀鞋单独这一种。
C.胞浆中形成NADH+H+经苹果酸穿梭后，每摩尔产生ATP 的摩尔数是：（ ）
D.以下哪部作品是钱钟书创作的（ ）

明代张介宾的《类经》是对《 》一书的分类编注

A.增加并合数有利于改善重量不匀率、提高纤维均匀混合。
B.战略性计划是指应用于（ ）。
C.抽样调查法具体可分为两种，概率调查法和
D.在EXCEL工作表中，若要输入邮政编码，要（ ）。

环境刑事责任和环境民事责任有何区别

A.下列哪一行为不属于行政许可行为
B.经典动画短片《堕落的艺术》中摄影师军官的工作是：（）
C.(4).血液病出血倾向的护理措施中，错误的是：
D.以下各项不是使人们在鉴赏中的主观感受和体验出现差异性的原因的是：

“一体堂宅仁医会”是清朝徐春甫组织成立的。

A.广义的教育包括（ ）（ ）（
B.下列哪项不是肉芽组织的组成成分
C.商周时期，以楚国为主的南方地区中，文字变化的特点是以（ ）为美。
D.大脑移植除了技术上的挑战之外，还有人格认知和理论的挑战。

对锐器损伤的防护，下列措施不正确的是（）

A.在引导过程中，接待人员应该走在来宾的前面，离来宾二三步的距离。
B.前我国连锁店采用的销售方式主要为( )两种类型。
C.吸收操作的依据是根据混合物的挥发度的不同而达到分离的目的。
D.以爱国主义为核心的民族精神包括：()

撕取坯布的直接目的在于。（ ）

A.企业将资金出借出后，有权要求其债务人按约定的条件支付利息和归还本金。
B.气胸患者呼吸困难一般与（）压缩成正比：
C.轴心受压基础的基底压力表达式为（ ）。
D.建立关系是人的基本需要，这种说法是正确的。

岩屑录井、钻时录井、气测录井均属于基于地球化学原理的录井方法。

A.按葡萄酒中二氧化碳含量分类，可以将将葡萄酒分为（ ）
B.个体发展具有非等速、非直线的特性，体现了人发展的规律性的（ ）
C.尺寸相同的铁环与铜环所包围的面积中，通以相同变化率的磁通量，环中（ ）
D.现在火车主要采用( )传动方式。