Question

which sampling method gives every member of the population an equal chance to be selected?
a. stratified sampling
b. systematic sampling
c. cluster sampling
d. random sampling

Explanation:

• Stratified sampling: Divides population into subgroups (strata) and samples from each. Not all members have equal chance as selection is within strata.
• Systematic sampling: Selects elements at regular intervals. If there's a pattern in population, chance may not be equal.
• Cluster sampling: Divides population into clusters and samples clusters. Members within non - sampled clusters have no chance.
• Random sampling: Every member of the population has an equal probability of being selected.

Answer:

d. Random sampling