*The next four questions refer to the following:* A Lake Tahoe Community College instructor is interested in the average number of days Lake Tahoe Community College math students are absent from class during a quarter.

### Exercise 15

What is the population she is interested in?

**A.**All Lake Tahoe Community College students**B.**All Lake Tahoe Community College English students**C.**All Lake Tahoe Community College students in her classes**D.**All Lake Tahoe Community College math students

#### Solution

D

### Exercise 16

Consider the following:

In this case,

**A.**Variable**B.**Population**C.**Statistic**D.**Data

#### Solution

A

### Exercise 17

The instructor takes her sample by gathering data on 5 randomly selected students from each Lake Tahoe Community College math class. The type of sampling she used is

**A.**Cluster sampling**B.**Stratified sampling**C.**Simple random sampling**D.**Convenience sampling

#### Solution

B

### Exercise 18

The instructor’s sample produces an average number of days absent of 3.5 days. This value is an example of a

**A.**Parameter**B.**Data**C.**Statistic**D.**Variable

#### Solution

C

*The next three questions refer to the following:* A study was done to determine the age, number of times per week and the duration (amount of time) of resident use of a local park in San Jose. The first house in the neighborhood around the park was selected randomly and then every 8th house in the neighborhood around the park was interviewed.

### Exercise 19

“‘Number of times per week’” is what type of data?

**A.**qualitative**B.**quantitative - discrete**C.**quantitative - continuous

#### Solution

B

### Exercise 20

The sampling method was:

**A.**simple random**B.**systematic**C.**stratified**D.**cluster

#### Solution

B

### Exercise 21

“‘Duration (amount of time)’” is what type of data?

**A.**qualitative**B.**quantitative - discrete**C.**quantitative - continuous

#### Solution

C