Ch 11 Check for Understanding

Front

What is an overestimate in sampling?

Back

An overestimate occurs when the sample percentage is higher than the actual percentage in the population. This can happen if the sample is not representative.

Front

What is voluntary response bias?

Back

Voluntary response bias occurs when individuals select themselves to participate in a survey, often leading to a sample that is not representative of the population.

Front

What is stratified random sampling?

Back

Stratified random sampling is a technique where the population is divided into subgroups (strata) that share similar characteristics, and random samples are taken from each stratum.

Front

What is the sample in a survey?

Back

The sample is the specific group of individuals selected from the population to participate in a survey.

Front

What is nonresponse bias?

Back

Nonresponse bias occurs when a significant number of selected participants do not respond to the survey, potentially skewing the results.

Front

What is response bias?

Back

Response bias is a tendency for respondents to answer questions inaccurately or falsely, often due to the wording of questions or social pressure.

Front

What is undercoverage bias?

Back

Undercoverage bias occurs when some members of the population are inadequately represented in the sample.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger population, where each individual has an equal chance of being selected.

Front

What is the importance of sample size in surveys?

Back

Larger sample sizes generally lead to more accurate and reliable results, reducing the margin of error.

Front

What is systematic random sampling?

Back

Systematic random sampling involves selecting every nth individual from a list of the population after a random starting point.