Quantitative research is a research strategy that focuses on quantifying the collection and analysis of data. This research strategy promotes the objective empirical investigation of observable phenomena to test and understand relationships. The objective of quantitative research is to develop and employ mathematical models, theories, and hypotheses pertaining to phenomena.
The process of measurement is central to quantitative research because it provides the fundamental connection between empirical observation and mathematical expression of quantitative relationships.
Quantitative data is any data that is in numerical form, such as statistics, percentages, etc. The researcher analyzes the data with the help of statistics and hopes the numbers will yield an unbiased result that can be generalized to some larger population. It is widely used in psychology, economics, demography, sociology, marketing, community health, health and human development, gender studies, and political science.
Qualitative research produces information only on the particular cases studied, and any more general conclusions are only hypotheses. Quantitative methods can be used to verify which of such hypotheses are true.

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Adapted from Wikipedia, the free encyclopedia. Internet. Accessed on May 4, 2021. Available at https://en.wikipedia.org/wiki/Quantitative_research