Describing Relationships Vocab

Front

No treatment, just collecting data

Back

Observational Study

Front

Impose a treatment

Back

Experiment

Front

Entire group

Back

Population

Front

Part of a group

Back

Sample

Front

Choosing people who are easy to reach

Back

Convenience Sample

Front

People volunteer to participate in surveys.

Back

Voluntary Sample

Front

Use random chance to pick people

Back

Random Sample

Front

One way to get a random sample:

Back

random number generator

Front

Increase sample size -> ___ variability

Back

decreases

Front

Some people can't be chosen

Back

Under coverage