Samples and Populations

Front

What is a Population in statistics?

Back

The entire group of objects or individuals considered for a survey.

Front

What is a Sample in statistics?

Back

A portion of the population being studied.

Front

What is a Random Sample?

Back

A sample in which each individual or object in the entire population has an equal chance of being selected.

Front

What does IQR stand for?

Back

Interquartile Range, a measure of statistical dispersion.

Front

How do you calculate the IQR?

Back

IQR = Q3 - Q1, where Q3 is the third quartile and Q1 is the first quartile.

Front

What is the difference between a sample and a population?

Back

Samples only consider a portion of the population being studied.

Front

What is a biased sample?

Back

A sample that does not accurately represent the population.

Front

What is a quartile?

Back

A value that divides a data set into four equal parts.

Front

What is the purpose of using a sample?

Back

To make inferences about the population without surveying the entire group.

Front

What is a stratified sample?

Back

A sample that is divided into subgroups and random samples are taken from each subgroup.