Stats: Collecting Data

Front

What is sampling variability?

Back

Sampling variability refers to the natural variation in the results obtained from different samples taken from the same population.

Front

How can you reduce sampling variability?

Back

By increasing the sample size.

Front

What is convenience sampling?

Back

Convenience sampling is a non-probability sampling technique where subjects are selected because of their convenient accessibility and proximity to the researcher.

Front

What is voluntary response bias?

Back

Voluntary response bias occurs when individuals select themselves to participate in a survey, often leading to a biased sample.

Front

What is an observational study?

Back

An observational study is a type of research where the researcher observes and records behavior without manipulating any variables.

Front

What is an experiment in statistics?

Back

An experiment is a study in which the researcher manipulates one or more variables to observe the effect on another variable.

Front

What is undercoverage bias?

Back

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

Front

What is nonresponse bias?

Back

Nonresponse bias occurs when individuals selected for the sample do not respond, leading to a potential bias in the results.

Front

What is stratified sampling?

Back

Stratified sampling is a method of sampling that involves dividing the population into subgroups (strata) and taking a sample from each stratum.

Front

What is simple random sampling?

Back

Simple random sampling is a sampling method where every member of the population has an equal chance of being selected.