大学MOOC statistics(浙江财经大学)1463023162 最新慕课完整章节测试答案

quizzes1

1、单选题：
‎In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of the（ ）‎
选项：
A: ordinal scale
B: nominal scale
C: ratio scale
D: interval scale
答案: 【 nominal scale】

2、单选题：
In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of the（ ）
选项：
A: ordinal scale
B: nominal scale
C: ratio scale
D: interval scale
答案: 【 nominal scale】

3、单选题：
The nominal scale of measurement has the properties of the（ ）.
选项：
A: ordinal scale
B: only interval scale
C: ratio scale
D: None of these alternatives is correct.
答案: 【 None of these alternatives is correct.】

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

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

6、单选题：
The ordinal scale of measurement has the properties of the（ ）.
选项：
A: ratio scale
B: interval scale
C: nominal scale
D: ratio and interval scales
答案: 【 nominal scale】

7、单选题：
The ratio scale of measurement has the properties of（ ）.
选项：
A: only the ordinal scale
B: only the nominal scale
C: the rank scale
D: the interval scale
答案: 【 the interval scale】

8、单选题：
The interval scale of measurement has the properties of the（ ）.
选项：
A: ratio and nominal scales
B: ratio and ordinal scales
C: ratio scale
D: None of these alternatives is correct.
答案: 【 None of these alternatives is correct.】

9、单选题：
Data obtained from a nominal scale（ ）.
选项：
A: must be alphabetic
B: can be either numeric or nonnumeric
C: must be numeric
D: must rank order the data
答案: 【 can be either numeric or nonnumeric】

10、单选题：
The scale of measurement that has an inherent zero value defined is the（ ）.
选项：
A: ratio scale
B: nominal scale
C: ordinal scale
D: interval scale
答案: 【 ratio scale】

11、单选题：
Quantitative data refers to data obtained with a(n)（ ）.
选项：
A: ordinal scale
B: nominal scale
C: either interval or ratio scale
D: only interval scale
答案: 【 either interval or ratio scale】

12、单选题：
The entities on which data are collected are（ ）.
选项：
A: elements
B: populations
C: samples
D: None of these alternatives is correct.
答案: 【 elements】

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

14、单选题：
A characteristic of interest for the elements is called a(n)（ ）.
选项：
A: sample
B: data set
C: variable
D: None of these alternatives is correct.
答案: 【 variable】

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

16、单选题：
Another name for "observations" is（ ）.
选项：
A: views
B: variables
C: cases
D: None of these alternatives is correct.
答案: 【 cases】

17、单选题：
Quantitative data（ ）.
选项：
A: are always nonnumeric
B: may be either numeric or nonnumeric
C: are always numeric
D: None of these alternatives is correct.
答案: 【 are always numeric】

18、单选题：
Ordinary arithmetic operations are meaningful（ ）.
选项：
A: only with categorical data
B: only with quantitative data
C: either with quantitative or categorical data
D: None of these alternatives is correct.
答案: 【 only with quantitative data】

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

20、单选题：
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（ ）.
选项：
A: categorical
B: quantitative
C: either categorical or quantitative
D: neither categorical nor quantitative
答案: 【 categorical】

21、单选题：
Data collected at the same, or approximately the same, point in time are（ ）.
选项：
A: time series data
B: approximate time series data
C: crossectional data
D: approximate data
答案: 【 crossectional data】

22、单选题：
Data collected over several time periods are（ ）.
选项：
A: time series data
B: time controlled data
C: crossectional data
D: time crossectional data
答案: 【 time series data】

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

24、单选题：
Statistical inference（ ）.
选项：
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
答案: 【 is the process of drawing inferences about the population based on the information taken from the sample】

25、单选题：
The collection of all el