Sampling and Bias Flashcard

Front

What is systematic sampling?

Back

A method of sampling where you start from a random point and select every nth element in the population.

Front

Describe the process of stratified sampling.

Back

A method of sampling where the population is divided into subgroups, or strata, and then samples are randomly selected from each stratum.

Front

What is voluntary response bias?

Back

A bias that occurs when individuals can choose whether or not to participate in a survey, often leading to overrepresentation of those with strong opinions.

Front

Explain simple random sampling.

Back

A method of sampling where individuals are randomly selected from a population to form a sample.

Front

What is a disadvantage of simple random sampling?

Back

It may not provide a representative sample if the population is diverse.

Front

Define response bias.

Back

A bias that occurs when respondents provide inaccurate answers due to misunderstanding or misinterpretation of the question.

Front

What is non-response bias?

Back

A bias that occurs when certain individuals selected for the sample do not respond, potentially skewing the results.

Front

Explain undercoverage bias.

Back

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

Front

What is cluster sampling?

Back

A method of sampling where the population is divided into clusters, and entire clusters are randomly selected to form a sample.

Front

What is the purpose of stratifying a population before sampling?

Back

To ensure that different subgroups are adequately represented in the sample.