Question

match the name of the sampling method descriptions given.
situations

• choosing every 5th person on a list
• randomly select two tables in the cafeteria and survey all the people at those two tables
• ask all the students in your math class
• number every name on a list and use a random number generator to select the first 50 numbers
• divide the population by age and select 5 people from each age

sampling method
a. convenience
b. simple random
c. stratified
d. cluster
e. systematic

Explanation:

1. Systematic sampling selects elements at regular intervals from a list.
2. Cluster sampling uses pre-existing groups (clusters) and surveys all members of randomly chosen clusters.
3. Convenience sampling uses easily accessible, nearby subjects.
4. Simple random sampling gives every subject an equal chance via random selection.
5. Stratified sampling divides the population into subgroups (strata) and selects from each subgroup.

Answer:

• choosing every 5th person on a list: e. Systematic
• randomly select two tables in the cafeteria and survey all the people at those two tables: d. Cluster
• ask all the students in your math class: a. Convenience
• number every name on a list and use a random number generator to select the first 50 numbers: b. Simple Random
• divide the population by age and select 5 people from each age: c. Stratified