Answered By: Steven Profit
Last Updated: Oct 06, 2017     Views: 454

Qualitative  research - Gathers information that might aim to understand the reasons why a behaviour occurs. Qualitative research uses methods such as observation, in-depth interviewing, and focus groups. (from Dictionary of Dentistry)

Quantitative research - Methods of investigating phenomena which involve the collection and analysis of numerical data. Such methods are particularly associated with surveys and experiments. (from Dictionary of Media and Communication)

For a side by side view, see these examples from the University of Wisconsin.