Which sampling method is most susceptible to bias due to convenience?

Which sampling method is most susceptible to bias due to convenience?

• A. Random Sampling
• B. Systematic Sampling
• C. Opportunity Sampling
• D. Stratified Sampling

Answer: (C)

The main idea here is how the way you choose participants can introduce bias. Opportunity, or convenience, sampling picks people simply because they are readily available to the researcher in a given place and at a certain time. This means the sample is likely not representative of the wider population, because it overweights those who happen to be nearby and underweights others who don’t share those circumstances. As a result, findings may not generalize beyond that convenient group. Random sampling tries to give everyone in the population an equal chance to be included, which reduces selection bias. Systematic sampling uses a fixed rule to select participants from a list, which is more controlled than convenience sampling. Stratified sampling divides the population into subgroups and samples from each to ensure representation, further reducing bias. But among these options, convenience-based selection is the most susceptible to bias due to how participants are chosen.

The main idea here is how the way you choose participants can introduce bias. Opportunity, or convenience, sampling picks people simply because they are readily available to the researcher in a given place and at a certain time. This means the sample is likely not representative of the wider population, because it overweights those who happen to be nearby and underweights others who don’t share those circumstances. As a result, findings may not generalize beyond that convenient group.

Random sampling tries to give everyone in the population an equal chance to be included, which reduces selection bias. Systematic sampling uses a fixed rule to select participants from a list, which is more controlled than convenience sampling. Stratified sampling divides the population into subgroups and samples from each to ensure representation, further reducing bias. But among these options, convenience-based selection is the most susceptible to bias due to how participants are chosen.