Types of Samples

To do market research, a telemarketing firm randomly selected 1000 names from a store's database and contacted them. Classify the sampling method.

• simple random

• systematic Random

• voluntary

• convenience

To get reactions about a particular new car, readers of a car magazine were asked to mail in their answers to a survey. Classify this sampling technique.

• simple random

• systematic Random

• voluntary

• convenience

When a random sample starting

point is chosen, followed by every

n-th individual, this sampling

method is

• simple random sampling

• stratified random sampling

• systematic random sampling

• Voluntarily random sampling

An easily accessible

sample is chosen

• simple sample

• systematic sample

• voluntary sample

• convenience sample

The population is invited to

respond

• simple sample

• systematic sample

• voluntary sample

• convenience sample

Everyone in the sample

has equal chance

• simple sample

• systematic sample

• voluntary sample

• convenience sample

Asking every fifth student in the sixth grade his

or her opinion on something.

• simple sample

• systematic sample

• voluntary sample

• convenience sample

A teacher randomly chooses names from a list

of all students in a school

• simple sample

• systematic sample

• voluntary sample

• convenience sample

Our class studying the weather patterns in NC to predict

for the entire United States

• simple sample

• systematic sample

• voluntary sample

• convenience sample

Bob asks 10 of his friends to determine what

percentage of students participate in sports.

• simple sample

• systematic sample

• voluntary sample

• convenience sample