The main difference between inductive and deductive reasoning is that inductive reasoning aims at developing a theory while deductive reasoning aims at testing an existing theory. Inductive moves from specific observations to broad generalizations, and deductive does the other way around.
Thus, the first question for quantitative research is "what is your underpinning/underlying theory?"
Quantitative research is a systematic investigation of phenomena by gathering quantifiable data and performing statistical, mathematical, or computational techniques to test the research hypotheses.
Develop an initial understanding of an issue or problem.
Look for a range of ideas and feelings about something.
Understand the different perspectives between groups of people.
Uncover underlying motivations and factors influencing decisions
Provide information needed to design a quantitative study
Explain findings from a quantitative study
Recommend a final course of action
Find whether there is a consensus on a particular issue
Project results to a larger population
Identify evidence regarding the cause and effects
Describe characteristics of relevant groups of people
Test specific hypotheses and examine specific relationships