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Research

Research that deals with the quantities of things and that involves the measurement of quantity or amount, applied to advertising audience research to develop actual numbers of audience members in order to accurately measure market situations.

Overview and background
Quantitative research is generally approached using scientific methods which include:

The generation of models, theories and hypotheses
The development of instruments and methods for measurement
Experimental control and manipulation of variables
Collection of empirical data
Modelling and analysis of data
Evaluation of results
Quantitative research is often an iterative process whereby evidence is evaluated, theories and hypotheses are refined, technical advances are made, and so on. Virtually all research in physics is quantitative whereas research in other scientific disciplines, such as taxonomy and anatomy, may involve a combination of quantitative and other analytic approaches and methods.
Statistics in quantitative research
Statistics is the most widely used branch of mathematics in quantitative research outside of the physical sciences, and also finds applications within the physical sciences, such as in statistical mechanics. Statistical methods are used extensively within fields such as economics, social sciences and biology. Quantitative research using statistical methods typically begins with the collection of data based on a theory or hypothesis, followed by the application of descriptive or inferential statistical methods. Causal relationships are studied by manipulating factors thought to influence the phenomena of interest while controlling other variables relevant to the experimental outcomes. In the field of health, for example, researchers might measure and study the relationship between dietary intake and measurable physiological effects such as weight loss, controlling for other key variables such as exercise. Quantitatively based opinion surveys are widely used...