Population and Sample

Front

What is a population in statistics?

Back

The entire group being studied.

Front

What is a sample in statistics?

Back

A part of the population being studied.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a subset of that population.

Front

What is a random sample?

Back

A sample that is selected by chance, ensuring that every member of the population has an equal chance of being chosen.

Front

What is a stratified sample?

Back

A sample that is divided into subgroups (strata) and random samples are taken from each stratum.

Front

What is a systematic sample?

Back

A sample obtained by selecting every nth member of the population.

Front

Why is sampling important in statistics?

Back

Sampling allows researchers to make inferences about a population without having to study every member.

Front

What is an example of a population?

Back

All the students in a school.

Front

What is an example of a sample?

Back

A group of 30 students selected from the school.

Front

What is a convenience sample?

Back

A sample that is taken from a group that is easy to reach.