Math 4: Review of Sampling Methods and Bias

Front

What is sampling in statistics?

Back

Sampling is the process of selecting a subset of individuals from a population to estimate characteristics of the whole population.

Front

What is bias in sampling?

Back

Bias in sampling occurs when certain members of a population are systematically more likely to be selected than others, leading to an inaccurate representation.

Front

What is a simple random sample?

Back

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

Front

What is systematic sampling?

Back

Systematic sampling involves selecting every nth individual from a list of the population.

Front

What is convenience sampling?

Back

Convenience sampling is a non-probability sampling method where samples are taken from a group that is easily accessible.

Front

What is self-selected (volunteer) sampling?

Back

Self-selected sampling occurs when individuals choose to participate in a study, often leading to bias.

Front

Why is the study of the hospital gym biased?

Back

The study is biased because it only asks night-shift ER staff, who may have different needs and preferences than the entire hospital staff.

Front

What is the least biased sampling method?

Back

The least biased sampling method is one that randomly selects individuals from the entire population, ensuring all have an equal chance.

Front

What is the difference between systematic and simple random sampling?

Back

In systematic sampling, every nth individual is selected, while in simple random sampling, every individual has an equal chance of being selected without a fixed interval.

Front

What is an example of convenience sampling?

Back

An example of convenience sampling is surveying people at a mall because they are easily accessible.