I need only 4 Questions.

Q1, Q5, Q8 and Q9. 

Chapter2 Analytics

QUESTION 1

1.

When summarizing two categorical columns of data, which of the following methods is the best for displaying the data?

								A.	contingency table
								B.	bar chart
								C.	pie chart
								D.	histogram

0.5 points   

QUESTION 2

1. One of the developing countries is experiencing a baby boom, with the number of births rising for the fifth year in a row, according to a BBC News report. Which of the following is best for displaying this data?

A.

B.

C.

D.

	A bar chart
A pie chart
	A histogram
A time-series plot

0.5 points   

QUESTION 3

1. Which of the following is appropriate for displaying data collected on the different brands of cars students at a major university drive?

A.

A bar chart

B.

C.

A histogram

D.

A contingency table

A scatter plot

0.5 points   

QUESTION 4

1. The dataset CandidateAssessment.csv can be downloaded from here:

Which of the following table is a correct summary for the column “Competence Rating”

A.

B.

C.

D.

Rating 1 2 3 4 5 6 7 Frequency 18 9 28 29 25 10 6

Rating 1 2 3 4 5 6 7 Frequency 8 19 20 29 20 16 8 NOT THE ANSWER

Rating 1 2 3 4 5 6 7 Frequency 8 19 28 29 20 10 6

Rating 1 2 3 4 5 6 7 Frequency 8 19 25 26 28 10 6

0.5 points   

QUESTION 5

1. Question 4 continues. Which of the following statements is the most suitable for the type of data for the column “Competence Rating”?

A.

B.

C.

D.

Continuous data

Categorical data

Ordinal data

ratio-scale data

NO0.5 points   

QUESTION 6

1. Question 4 continues. Which of the following table correctly summarizes the relative frequency distribution for the column “Competence Rating”?

A.

B.

C.

D.

Rating 1 2 3 4 5 6 7 Relative Frequency 17% 6% 20% 27% 17% 8% 5%

Rating 1 2 3 4 5 6 7 Relative Frequency 7% 16% 23% 24% 17% 8% 5%

Rating 1 2 3 4 5 6 7 Relative Frequency 7% 19% 20% 29% 12% 8% 5%

Rating 1 2 3 4 5 6 7 Relative Frequency 7% 16% 23% 14% 15% 10% 15%

0.5 points   

QUESTION 7

1. Question 4 continues.  By presenting the scatter plot for x=Age Rater, y=Salary, which of the following statements best describes the relationship between age and salary? 

Salary is strongly  related to age, the higher the age, the higher the salary.

Salary is strongly  related to age, the higher the age, the lower the salary.

Salary is weakly  related to age, there is no much relationship.

The scatter plot shows no information on the relationship between age and salary.

0.5 points   

QUESTION 8

1. Question 4 continues. By presenting the histogram for the “Salary” column with breaks=20 in the hist command, which of the following conclusion is the most appropriate?

A.

B.

C.

D.

The chance of getting salary higher than 35 is larger than the chance of getting salary lower than 35.

The chance of getting salary lower than 35 is larger than the chance of getting salary higher than 35.

The chance of getting salary higher than 35 is equal to the chance of getting salary lower than 35.

The chance of getting salary higher than 35 is half the chance of getting salary lower than 35.

0.5 points   

QUESTION 9

1. Question 4 continues. By presenting the side-by-side (1 by 2) histograms with breaks=20 for the salary data for male candidates and for female candidates, which of the following conclusions is the most appropriate? 

A.

B.

C.

D.

Male candidates have a bigger chance to get salary higher than 40.
Female candidates have a bigger chance to get salary higher than 40.
Male and female candidates have the same chance to get salary higher than 40.
	The data cannot provide the conclusions in A, or B, or C above.

0.5 points   

QUESTION 10

1. Question 4 continues. By presenting the contingency table for  x=”Department” and y=”Gender-Candidate”, which of the following statements is true?

A.

B.

C.

D.

There are more male candidates from Biology than from Chemistry.

There are more male candidates from Biology than from Physics.

There are more female candidates from Physics than from Chemistry.

There are equal number of male candidates and female candidates from all three departments.

0.5 points   

0.0

M

9

.2

1 M

0

2 M M M to M Public

3

2 M F F to M Private Biology

2 M M M to M Public Chemistry

2 M F F to M Private Physics

2 M M M to M Public Biology

.0

2 M F F to M Private Chemistry

27.0 2 M M M to M Public Physics

2 M F F to M Private Biology 56

3 M M M to M Public Chemistry

3 M F F to M Private Physics

3 M M M to M Public Biology

3 M F F to M Private Chemistry

28.5 3 M M M to M Public Physics 63

3 M F F to M Private Biology

28.8 3 M M M to M Public Chemistry

28.8 3 M F F to M Private Physics 56
28.8 3 M M M to M Public Biology 48

3 M F F to M Private Chemistry

3 M M M to M Public Physics 58

3 M F F to M Private Biology

4 M M M to M Public Chemistry 54

3 M F F to M Private Physics 55

3 M M M to M Public Biology 56

4 M F F to M Private Chemistry 57

30.0 4 M M M to M Public Physics 50
30.0 4 M F F to M Private Biology 56

4 M M M to M Public Chemistry

4 M F F to M Private Physics 60

30.5 4 M M M to M Private Biology 58

4 M F F to M Public Chemistry 50

4 M M M to M Private Physics

4 M F F to M Public Biology

31.6 4 M M M to M Private Chemistry 54
31.6 5 M F F to M Public Physics 48

5 M M M to M Private Biology

4 M F F to M Public Chemistry

32.1 4 M M M to M Private Physics 56

5 M F F to M Public Biology 52

5 M M M to M Private Chemistry

5 M F F to M Public Physics 52

5 M M M to M Private Biology 58

5 M F F to M Public Chemistry 52

5 M M M to M Private Physics

5 M F F to M Public Biology 57

5 M M M to M Private Chemistry 50

5 M F F to M Public Physics 55

6 M M M to M Private Biology 57

5 M F F to M Public Chemistry 57

35.0 6 M M M to M Private Physics 52

6 M F F to M Public Biology 50

5 M M M to M Private Chemistry

6 M F F to M Public Physics

6 M M M to M Private Biology 63

6 M F F to M Public Chemistry 45

.7

7 M M M to M Private Physics 48

7 M F F to M Public Biology 50

.5

7 M M M to M Private Chemistry 59

7 M F F to M Public Physics 59

1 F M

Public Biology 49

1 F F

Private Chemistry

1 F M M to F Public Physics 63

1 F F F to F Private Biology 59

1 F M M to F Public Chemistry 51

1 F F F to F Private Physics 50

22.3 2 F M M to F Public Biology 47

2 F F F to F Private Chemistry 61

2 F M M to F Public Physics 52

2 F F F to F Private Biology 61

2 F M M to F Public Chemistry 49

23.2 2 F F F to F Private Physics 56

2 F M M to F Public Biology 53

2 F F F to F Private Chemistry 44

23.7 2 F M M to F Public Physics 49

2 F F F to F Private Biology 56

24.4 2 F M M to F Public Chemistry

3 F F F to F Private Physics 57

24.8 3 F M M to F Public Biology 53
25.0 3 F F F to F Private Chemistry 48

3 F M M to F Public Physics 58

26.0 3 F F F to F Private Biology 56
26.0 3 F M M to F Public Chemistry 60
26.2 3 F F F to F Private Physics 55

3 F M M to F Public Biology 57

3 F F F to F Private Chemistry 64

3 F M M to F Public Physics 47

3 F F F to F Private Biology 54

4 F M M to F Public Chemistry 50

3 F F F to F Private Physics 54

3 F M M to F Private Biology 48

27.9 3 F F F to F Public Chemistry 49
28.3 4 F M M to F Private Physics 58
28.3 4 F F F to F Public Biology 56
28.3 4 F M M to F Private Chemistry 57
28.4 4 F F F to F Public Physics 50
28.5 4 F M M to F Private Biology 57
28.5 4 F F F to F Public Chemistry 59

4 F M M to F Private Physics 37

4 F F F to F Public Biology 61

29.2 4 F M M to F Private Chemistry 48
29.2 4 F F F to F Public Physics 53
29.4 4 F M M to F Private Biology 59

4 F F F to F Public Chemistry 51

29.5 5 F M M to F Private Physics 56
30.2 4 F F F to F Public Biology 62

5 F M M to F Private Chemistry 57

4 F F F to F Public Physics 56

5 F M M to F Private Biology 57

31.0 4 F F F to F Public Chemistry 53

6 F M M to F Private Physics 55

5 F F F to F Public Biology 62

5 F M M to F Private Chemistry 56

32.0 6 F F F to F Public Physics 49
32.3 5 F M M to F Private Biology 45

5 F F F to F Public Chemistry 54

35.0 6 F M M to F Private Physics 51

6 F F F to F Public Biology 50

40.0 7 F M M to F Private Chemistry 50

7 F F F to F Public Physics 58

Salary	Competence Rating	Gender-Candidate	Gender-Rater	RaterCandGender	School	Department	Age-Rater
																			2								1																																																																																																																								M																														M to M																																																												Public																																								Biology																														4
2																												3																																																																																																																								F																														F to M																																																												Private																																								Chemistry													6
	24.4																																								Physics																						5
	25.0											50
25.2	39
		26.0	60
	26.2		44
	2						7				61
												56
27.7
	27.9						52
			28.3				63
	28.4							58
			28.5							48
			28.8						54
46
28.9											57
29.0
		29.2					55
29.3
	29.4
29.6
		30.0
	30.2				53
	30.5
30.9
31.1						49
		31.6	43
31.9	71
	32.1			45
32.2
	32.3	42
32.5
32.7
32.8
32.9		64
33.1
33.4
33.6
34.5
		35.0
35.1
35.5				51
35.8						59
36.0
36.5
	37
	40.0
		47
50.0
18.5																														M to F
20.0																														F to F			62
21.0
21.2
21.7
	22.3
22.6
22.8
22.9
	23.2
23.6
	23.7
24.0
65
	24.8
25.4
26.4
26.5
26.8
26.9
27.2
27.3
27.6
28.6
28.7
	29.5
30.4
30.6
	31.0
31.2
31.7
	32.0
33.5
37.5
47.5