Systematic Stratified and Random Sampling

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?

• random

• systematic

• convenience

• stratified

• cluster

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?

• random

• systematic

• convenience

• stratified

• cluster

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?

• random

• systematic

• convenience

• stratified

• cluster

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

• random

• systematic

• convenience

• stratified

• cluster

Mrs. Trahan samples her class by selecting every third person on her class list.  Which type of sampling method is this?

• Simple

• Systematic

• Stratified

• Cluster

Farmer Joe's apple tree farm is set up in 100 rows.  He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm.  This is _____________ sampling.  

• Simple

• Stratified

• Cluster

• Systematic

Farmer Joe separates his farm into 10 regions.  He then randomly selected 5 trees from each region to estimate the number of apples produced on his apple tree farm.  This is _____________ sampling.  

• Cluster

• Systematic

• Stratified

• Simple

Which sampling technique involves dividing a population into groups, then randomly selecting individuals from each group.

• Simple Random Sample

• Stratified

• Cluster

• Systematic

Which sampling technique involves selecting every nth subject in a population?

• Simple Random Sample

• Stratified

• Cluster

• Systematic