Data Science for Business and Decision Making

Answers

Answer Keys: Exercises: Chapter 2

4)

1. a) Continuous
2. b) Ordinal
3. c) Continuous
4. d) Discrete
5. e) Continuous
6. f) Nominal
7. g) Ordinal
8. h) Ordinal
9. i) Continuous
10. j) Nominal
11. k) Binary
12. l) Ordinal
13. m) Discrete
14. n) Ordinal
15. o) Binary

Answer Keys: Exercises: Chapter 3

6) Boxplot

7) Bar chart—qualitative and quantitative variables

Scatter plot—quantitative variables

8) Bar (horizontal and vertical), pie, and Pareto charts

9)

Cars sold	Fi	Fri (%)	Fac	Frac (%)
5	4	13.33	4	13.33
6	5	16.67	9	30
7	4	13.33	13	43.33
8	6	20	19	63.33
9	4	13.33	23	76.67
10	4	13.33	27	90
11	3	10	30	100
Sum	30	100

10)

Class	Fi	Fri (%)	Fac	Frac (%)
54.7 ├ 61.7	4	13.33	4	8
61.7 ├ 68.7	4	13.33	8	16
68.7 ├ 75.7	10	33.33	18	36
75.7 ├ 82.7	17	56.67 ...