Systematic Stratified and Random Sampling

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample

• Stratified Random Sample

• Voluntary Response

• Systematic Random Sampling

This sample is selected by dividing the population into subgroups and then taking a fixed number of units from each group using the simple random sample.

• stratified

• cluster

• judgment

• experimental

Units of the population are ordered in some fashion.  Usually, every k-th unit is chosen.

• proportional

• probable

• stratified

• systematic

Identify the sampling design: Student government randomly samples 25 students of each of the four classes.

• stratified

• volunteer

• systematic

• simple random

At the start of each shift, randomly select a number from 1 to 10, choose that person as they arrive and then test every 10th person after that who arrives for work.

• Convenience Sample

• Voluntary response Sample

• Stratified Sample

• Cluster Sample

• Stratified Sample

• SRS

• Systematic Sample

Josh surveyed every 5th person who walked into the cafeteria. Is this a systematic random sample

• No

• Yes

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

• SRS

• Systematic

• Stratified

• Cluster

The researcher was given a list of 200 Grade 11 students by the admin assistant. Every fifth name on the list was chosen by the researcher.

• Simple Random Sampling

• Systematic Random Sampling

• Stratified Random Sampling

• Cluster or Area Sampling

Identify the sampling design: The LFCC registrar wants to investigate attitudes of their graduates.  The registrar randomly selects 100 names from each of the four past graduating classes.

• cluster

• volunteer

• stratified

• simple random

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience