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﻿Chapter 1
What is Statistics?
1. a. Interval
b. Ratio
c. Interval
d. Nominal
e. Ordinal
f. Ratio

2. a. Ratio
b. Nominal
c. Ratio
d. Ratio

4. a. Sample
b. Population
c. Population
d. Sample

5. Qualitative data is not numerical, whereas quantitative data is numerical. Examples will vary by student.

6. A population is the entire group which you are studying. A sample is a subset taken from a population.

7. Discrete variables can assume only certain values, but continuous variables can assume any values within some range. Examples will vary

8. a. A sample is used because it is difficult to locate every student.
b. A population is employed because the information is easy to find.
c. A population is used because the information is easy to find.
d. A sample works because it is difficult to locate every musical.

9. Discrete Continuous
Qualitative b. Gender
d. Soft drink preference
Quantitative f. SAT scores a. Salary
g. Student rank in class c. Sales volume of MP3 players
h. Rating of a finance professor e. Temperature
i. Number of home computers

Discrete Continuous
Nominal b. Gender

Ordinal d. Soft drink preference
g. Student rank in class
h. Rating of a finance professor
Interval f. SAT scores e. Temperature
Ratio a. Salary
c. Sales volume of MP3 players
i. Number of home computers