大学MOOC 商务统计(青岛理工大学琴岛学院)1452258185 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: 【 a group of people.】

3、单选题：
The main purpose of inferential statistics is to:‌‌
选项：