Statistics Review

Front

What is a statistic?

Back

A numerical value summarizing the sample data.

Front

What is an experiment in statistics?

Back

A planned activity whose results yield a set of data.

Front

What is stratified sampling?

Back

A sampling method that involves dividing the population into subgroups and selecting samples from each subgroup.

Front

What is a cluster random sample?

Back

A sampling method where the population is divided into clusters, and entire clusters are randomly selected.

Front

How many 7th graders had an IQ score in the 81-90 range?

Back

13.

Front

What is simple random sampling?

Back

A sampling method where each member of the population has an equal chance of being selected.

Front

What is systematic sampling?

Back

A sampling method where members are selected at regular intervals from a randomly ordered list.

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 the population.

Front

What is the purpose of using a sample in statistics?

Back

To make inferences about the population without surveying every member.

Front

What is a variable in statistics?

Back

A characteristic or attribute that can take on different values.