Making Sense of Data I: A Practical Guide to Exploratory Data Analysis and Data Mining, 2nd Edition

APPENDIX A ANSWERS TO EXERCISES

Chapter 2

1a.	Nominal
1b.	Ratio
1e.	Ratio
1f.	Ratio
1g.	Ratio
1h.	Ratio
1i.	Nominal
2a.	45
2b.	45
2c.	48.7
2d.	53
2e.	324.9
2f.	18.02
3.	See Figure A.1

FIGURE A.1 Frequency distribution for Exercise 3 from Chapter 2.

Chapter 3

1. See Table A.1
2. See Table A.2
3. See Table A.3

Chapter 4

See Table A.4

2a. See Table A.5

2b. See Table A.6

2c. See Table A.7

See Figure A.2

TABLE A.1 Chapter 3, Question 1 Answer

Name	Weight (kg)	Weight (kg)—Normalize to 0–1
P. Lee	50	0.095
R. Jones	115	0.779
J. Smith	96	0.579
A. Patel	41	0
M. Owen	79	0.4
S. Green	109	0.716
N. Cook	73	0.337
W. Hands	104	0.663
P. Rice	64	0.242
F. Marsh	136	1

TABLE A.2 Chapter 3, Question 2 Answer

Weight (kg)—Categorized
Name	Weight (kg)	(Low, Medium, High)
P. Lee	50	Low
R. Jones	115	High
J. Smith	96	Medium
A. Patel	41	Low
M. Owen	79	Medium
S. Green	109	High
N. Cook	73	Medium
W. Hands	104	High
P. Rice	64	Low
F. Marsh	136	High

TABLE A.3 Chapter 3, Question 3 Answer

Name	Weight (kg)	Height (m)	BMI
P. Lee	50	1.52	21.6
R. Jones	115	1.77	36.7
J. Smith	96	1.83	28.7
A. Patel	41	1.55	17.1
M. Owen	79	1.82	23.8
S. Green	109	1.89	30.5
N. Cook	73	1.76	23.6
W. Hands	104	1.71	35.6
P. Rice	64	1.74	21.1
F. Marsh	136	1.78	42.9

TABLE A.4 Chapter 4, ...