Data Sampling Types

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

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

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

The ratio of students who travel to college by train to those who walk is 2:3. There are 360 students in the sixth form.

To create a representative sample of 20 students, 8 who travel by train and 12 who walk are selected at random, and given a survey to complete.

What type of sampling is this?

• Convenience sampling

• Quota sampling

• Stratified random sampling

• Systematic sampling

• Representative Sample

• Voluntary Sample

• Random Sample

• Systematic Sample

Coach Mullins surveys the students sitting in the back of her room by her desk. This can best be described as......

• Biased sample

• Random sample

• Convenience sample

Members of the population are put in some order, a starting point is selected at random, and a pattern is selected to survey the group

• Representative Sample

• Voluntary Sample

• Systematic Sample

• Random Sample

• Representative Sample

• Voluntary Sample

• Convenience Sample

• Random Sample

Selecting every 10^th item in the population is an example of a ...

• Systematic sample

• Cluster sample

• Stratified sample

• Random sample

Randomly selecting 10 students from each year group in a school is an example of...

• Simple random sampling

• Stratified sampling

• Systematic sampling

• Quota sampling