This document discusses data collection in quantitative studies. It explains that data are facts that provide information about the phenomenon being studied. There are several steps to collecting data quantitatively: identifying data needs like variables to measure or hypotheses to test; selecting appropriate measurement tools; pretesting instruments; developing data collection forms and procedures; implementing a data collection plan including selecting and training personnel; and addressing issues that may arise during the process like maintaining controls. The goal is to gather information consistently and validly to address the research questions.