Studies can use quantitative data, quantitative data, or both types of data. Each approach has advantages and disadvantages. Explore the resources in the box at the left for more information.
Of the available library databases, only ERIC (for education topics) and PsycINFO (for psychology topics) allow you to limit your results by the type of data a study uses. Hover over the database name below for information on how to do so.
Note: database limits are helpful but not perfect. Rely on your own judgment when determining if data match the type you are seeking.
Quantitative variables can be continuous or discrete.
Qualitative variables can be nominal or ordinal.