Sample Methods and Bias

A _________________ is a method of gathering information that can be used for a small population and studies every individual.

• Systematic Random Sample

• Convenience Sample

• Census

• Simple Random Sample

The entire group that information is collected on is called the ______________________.

• Population

• Sample

• Sampling frame

• Statistic

A sample that is not representative of the population is considered __________________.

• Systematic

• Equally likely

• Stratified

• Biased

In a simple random sample (SRS) each individual is equally likely to be chosen.

• True

• False

Name the sampling method: Select every nth individual to be in the sample.

• Simple Random Sample

• Systematic Random Sample

• Stratified Random Sample

• Cluster Sample

• Convenience Sample

Name the sampling method: Divide the population into homogeneous groups, then select a random sample from each group.

• Simple Random Sample (SRS)

• Systematic Random Sample

• Stratified Random Sample

• Cluster Sample

• Convenience Sample

Name the sampling method: Divide the population into heterogeneous groups. Randomly select one or more groups and include all individuals from those groups in the sample.

• Simple Random Sample

• Systematic Random Sample

• Stratified Random Sample

• Cluster Sample

• Convenience Sample

Random selection eliminates bias from our choice of sample, and guarantees that our sample is representative of the population.

• True

• False

Name the type of bias. A group from the population is left out of the sample

• Response Bias

• Nonresponse Bias

• Undercoverage

Name the type of bias. Some individuals refuse to give information.

• Response Bias

• Nonresponse Bias

• Undercoverage

• None of these