Samples and Populations

Front

What is a Population in statistics?

Back

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a Sample in statistics?

Back

A portion of the population being studied.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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.

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CCSS.HSS.IC.B.3

Front

What does IQR stand for?

Back

Interquartile Range, a measure of statistical dispersion.

Tags

CCSS.6.SP.B.5C

Front

How do you calculate the IQR?

Back

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

Tags

CCSS.6.SP.B.5C

Front

What is the difference between a sample and a population?

Back

Samples only consider a portion of the population being studied.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a biased sample?

Back

A sample that does not accurately represent the population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a quartile?

Back

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

Tags

CCSS.6.SP.B.5C

Front

What is the purpose of using a sample?

Back

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

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a stratified sample?

Back

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

Tags

CCSS.HSS.IC.B.3