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本课程起止时间为:2019-11-18到2020-01-12
本篇答案更新状态:已完结

【作业】testing chapter demo homework

1、 问题:descript yourself
评分规则: 【 height, weight and habit

testing chapter demo testing

1、 问题:What year is this year?
选项:
A:2019
B:2018
C:2017
D:2016
答案: 【2019

2、 问题:You are a Chinese student. True or false?
选项:
A:正确
B:错误
答案: 【错误

3、 问题:Which month is this month? (Nov, Dec. or Oct.)
答案: 【Nov.

【作业】chapter 1 Introduction and data description Chapter 1-homework

1、 问题:Calculation
评分规则: 【

Chapter 2 Table and graph &SPSS application Chapter 2

1、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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?
选项:
A:正确
B:错误
答案: 【错误

6、 问题:Histograms can be drawn by using vertical or horizontal bars. True or false?
选项:
A:正确
B:错误
答案: 【错误

7、 问题:The type of graph used to represent data is determined by the type of data collected and by the researcher’s purpose. True or false?
选项:
A:正确
B:错误
答案: 【正确

8、 问题:Data collected over a period of time can be graphed by using a pie graph. True or false?
选项:
A:正确
B:错误
答案: 【错误

9、 问题:Tables have two types, ___and multiple table. 
答案: 【simple table

10、 问题:____plot can display the relationship or association between two continuous variables.
答案: 【Scatter

chapter 1 Introduction and data description Chapter 1

1、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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)

【作业】Chapter 2 Table and graph &SPSS application Chapter 2 homework

1、 问题:Draw graphs
评分规则: 【

Chapter 3 Normal probability distribution Chapter 3

1、 问题:The mean of the standard normal distribution is
选项:
A:0
B:1
C:100
D:Undetermined
答案: 【0

2、 问题:Which is a property of the standard normal distribution?
选项:
A:It’s symmetric about the mean
B:It is not uniform
C:The mean is variable
D:It has no mode
答案: 【It’s symmetric about the mean

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