Skip to Main Content

Statistical Tests: Glossary

This guide will give you some resources for understanding and conducting statistical analyses.

Important Statistical Terms

Dependent variable: Varies in a way that depends on something else 

Descriptive statistics: Data about a set of data, like measures of central tendency and variability 

Independent variable: Varies in a way that isn't dependent on something else 

Interval scale: A measurement where distance between the measurements matter 

Mean: The average of a set of numbers

Median: The middle value of a set of numbers 

Nominal scale: A label, not really a measurement (has no quantitative value)

Non-parametric data: Data from ordinal or nominal scales 

Ordinal scale: A measurement in rank order, distances between the measurements don't matter

Parametric data: Distributions are normal, interval or ratio data 

Ratio scale: A measurement where absolute zero matters