Question

question 8 (1 point)
sampling methods.
when collecting data, what three sampling methods are the most unbiased.
a volunteer sample
b simple random sample
c convenience sample
d cluster sample
e stratified sample

Explanation:

• Simple Random Sample: Every member of the population has an equal chance of being selected.
• Cluster Sample: Divides the population into clusters, then randomly selects some clusters and includes all members of those clusters.
• Stratified Sample: Divides the population into subgroups (strata) and then randomly selects from each stratum.

Volunteer Sample (A) is biased as it only includes those who volunteer. Convenience Sample (C) is biased as it only includes easily accessible individuals.

Answer:

B. Simple Random Sample, D. Cluster Sample, E. Stratified Sample