Author: Anonymous

A retrospective study uses data from the past, such as official records or interviews.

A uniform distribution has no mode because all data values have the same frequency.

A distribution that is not symmetric must contain a value that is an outlier.

The calculation of cumulative frequency does not involve total frequencies.

The nurse’s total taxable income of $100,030 last year is at ratio level of measurement.

A treatment group in an experiment is the group that receives treatment.

A placebo lacks the active ingredient of a treatment being tested in a study.

Cluster sampling is one of the scientific sampling method.

An experiment is an example of a prospective study.

A prospective study is set up to collect data in the future.