大学MOOC Medical Statistics$ SPSS(南方医科大学)1206780805 最新慕课完整章节测试答案

Chapter 1

1、单选题：
‍Describe which measure of central tendency—mean, median, geometric mean or mode—was‏‍probably used in each situation.‏‍1) One-half of the factory workers make more than $5.37 per hour, and one-half make less than $5.37 per hour. ‏‍‏
选项：
A: mean
B: median
C: mode
D: geometric mean
答案: 【 median】

2、单选题：
Describe which measure of central tendency—mean, median, geometric mean or mode—was‎probably used in each situation.‎‍2) The average number of children per family in the Plaza Heights Complex is 1.8.‎‍‎
选项：
A: mean
B: median
C: geometric mean
D: mode
答案: 【 mean】

3、单选题：
Describe which measure of central tendency—mean, median, geometric mean or mode—was‍probably used in each situation.‍​3) Most people prefer red convertibles over any other color. ‍
选项：
A: mean
B: median
C: geometric mean
D: mode
答案: 【 mode】

4、单选题：
‍The mean of blood pressure in a series of boys is 120 kPa, and the standard deviation of the same data is 10 kPa, the coefficient of variation of this data equals‍
选项：
A: 8.3%
B: 6.5%
C: 4.2%
D: 10.2%
答案: 【 8.3%】

5、单选题：
‎The observations are 1,5,7,4,2,2,8, what is the mode of those observations‌
选项：
A: 2
B: 4.5
C: 8
D: 3.6
答案: 【 2】

6、判断题：
‎If a variable is measured in feet, its units on the variance will also be in feet, true or false?‍
选项：
A: 正确
B: 错误
答案: 【 错误】

7、判断题：
‌Dispersion is a measure of the variability among the elements of a population or sample, true or false?‎
选项：
A: 正确
B: 错误
答案: 【 正确】

8、判断题：
If data area skewed, geometric mean can be used to describe the central tendency, true or false?‎
选项：
A: 正确
B: 错误
答案: 【 正确】

9、填空题：
The observations are listed as 10, 11, 15 and 18, what is the mean of these observations? (keep one decimal in your answer)‏‌‏
答案: 【 13.5】

10、填空题：
The observations are listed as 10, 11, 15 and 18, What is standard deviation of these observations ? (keep one decimal in your answer)‌‌‍‌
答案: 【 (3,4)】

Chapter 2

1、单选题：
‌Which graph is best to describe the proportion of blood groups?‎
选项：
A: Histogram
B: Pie graph
C: Line graph
D: Bar graph
答案: 【 Pie graph】

2、单选题：
‌Which graph is best to describe frequency table‎
选项：
A: Histogram
B: Bar graph
C: Line graph
D: Pie graph
答案: 【 Histogram】

3、单选题：
‍What are the boundaries for 8.6–8.8?‏
选项：
A: 8–9
B: 8.5–8.9
C: 8.55–8.85
D: 8.65–8.75
答案: 【 8.55–8.85】

4、单选题：
‎What graph should be used to show the relationship between the parts and the whole?‍‎‍
选项：
A: Histogram
B: Pie graph
C: Line graph
D: Scatter plot
答案: 【 Pie graph】

5、判断题：
‍In the construction of a frequency distribution, it is a good idea to have overlapping class limits, such as 10–20, 20–30, 30–40. True or false?‌‍‌