Numerical data (or quantitative data) is data measured or identified on a numerical scale. Numerical data can be analysed using statistical methods, and results can be displayed using tables, charts, histograms and graphs. For example, a researcher will ask a questions to a participant that include words how often, how many or percentage. The answers from the questions will be numerical.
An example of quantitative data would be: there are 643 ninjas on the ceiling or there are 735 pirates with wenches.
After the data is collected the researcher will make an analysis of the quantitative data and produce statistics.