Types of Samples

Data Sample Types

Multiple Choice

The author of the statistical study was an observer at a police sobriety checkpoint at which every 5th driver was stopped and interviewed. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

A researcher for the Spaulding athletic equipment company is studying the relationship between the level of education and participation in any sport. She conducts a survey of 40 randomly selected golfers, 40 randomly selected tennis players and 40 randomly selected swimmers. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

On Days of presidential elections, the news media organize an exit poll in which specific polling stations are randomly selected and all voters are surveyed as they leave the premises. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

An engineering student measures the strength of fingers used to push buttons by testing family members. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

In a Gallup poll of 1059 adults, they interviewed subjects who were selected by using a computer to randomly generate telephone numbers that were then called. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

A market researcher has divided all California residents into categories of unemployed, employed full time, and employed part time. She is surveying 50 people from each category. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

Fund-raisers for the local college test a new telemarketing campaign by obtaining a list of all alumni and selecting every 100th name on that list. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

The author of a study surveyed all of his students to obtain sample data consisting of the number of credit cards students possess. Which sampling type is this?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

A researcher conducts an opinion survey in a major city. The researcher chooses 75 participants from four different ethnic groups: African Americans, Asian Americans, European Americans, and Native Americans. Which sampling type is used?

• simple random

• convenience

• stratified

• cluster

• systematic

Multiple Choice

A farmer divides his orchard into 50 subsections, randomly selects 4, and samples all the trees within those subsections. Which sampling technique was used?

• simple random

• convenience

• stratified

• cluster

• systematic