大学MOOC 商务统计(蒋婷)(南京财经大学)1462722163 最新慕课完整章节测试答案

第一单元测试

1、单选题：
‏The general process of gathering, organizing, summarizing, analyzing, and interpreting data to assist in making effective decisions is called:‎
选项：
A: statistics.
B: descriptive statistics.
C: inferential statistics.
D: levels of measurement.
答案: 【 statistics.】

2、单选题：
​A sample is:​
选项：
A: at least 15 observations.
B: a group of people.
C: part of a population.
D: a set of frequencies.
答案: 【 part of a population.】

3、单选题：
The main purpose of inferential statistics is to:​​
选项：
A: summarize data in a useful and informative manner.
B: estimate population characteristics based on a sample information.
C: determine if the data adequately represents the population.
D: gather or collect data.
答案: 【 estimate population characteristics based on a sample information.】

4、单选题：
‏To study the characteristics of loan applicants, a random sample of 50 loan applicants is selected and their annual incomes are obtained. Which level of measurement is annual income?‎
选项：
A: Nominal
B: Ordinal
C: Interval
D: Ratio
答案: 【 Ratio】

5、单选题：
‏The main purpose of descriptive statistics is to:‌
选项：
A: summarize data in a useful and informative manner.
B: estimate a population characteristic based on a sample.
C: determine if the data adequately represents the population.
D: gather or collect data.
答案: 【 summarize data in a useful and informative manner.】

6、单选题：
‎A bank asks customers to evaluate the quality of drive-through service as good, average, or poor. Which level of measurement is used to measure service quality?​
选项：
A: Nominal
B: Ordinal
C: Interval
D: Ratio
答案: 【 Ordinal】

7、单选题：
The main purpose of descriptive statistics is to:​​
选项：
A: summarize data in a useful and informative manner.
B: estimate a population characteristic based on a sample.
C: determine if the data adequately represents the population.
D: gather or collect data.
答案: 【 summarize data in a useful and informative manner.】

8、单选题：
‎Gallup political polls ask people their political party affiliation - Democrat, Republican or Independent. Which level of measurement is used to measure party affiliation?‎
选项：
A: Nominal
B: Ordinal
C: Interval
D: Ratio