a method of research that relies on measuring variables using a numerical system, analyzing these measurements using any of a variety of statistical models, and reporting relationships and associations among the studied variables. For example, these variables may be test scores or measurements of reaction time. The goal of gathering this quantitative data is to understand, describe, and predict the nature of a phenomenon, particularly through the development of models and theories. Quantitative research techniques include experiments and surveys.
Professor Norma T. Mertz briefly discusses qualitative research and how it has changed since she entered the field. She emphasizes the importance of defining a research question before choosing a theoretical approach to research.
This is just one segment in a series about quantitative methods. You can find additional videos in our SAGE database, Research Methods:
The SAGE Handbook of Quantitative Methodology for the Social Sciences by 
Quantitative and Statistical Research Methods by 
Quantitative Research for the Qualitative Researcher by 
Quantitative Research Methods for Political Science, Public Policy and Public Administration (With Applications in R) by 
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