In this work, an example of civil engineering. research conducted using the Delphi method is. watch. The Delphi method is one of the most widespread. popular scientific methods for research. problems with. Quantitative research is the process of collecting and analyzing numerical data to describe, predict, or control variables of interest. This type of research allows you to test causal relationships between variables, make predictions, and generalize the results to larger populations. The purpose of quantitative research is to test something predefined: Consider your objectives and approach: Choose a type of research design: Identify your population and sampling method: Choose your data collection methods: Plan your data collection procedures data collection: Decide on your data analysis strategies. Frequently Asked Questions. Experimental design. Experimental design is a process of planning and carrying out scientific experiments to investigate a hypothesis or research question. This involves carefully designing an experiment that can test the hypothesis and controlling other variables that might influence the results. Experimental design usually includes. Ex post facto research designs. Ex post facto research design is a non-experimental design method that adopts. several aspects of a real experience especially with regard to separation. Literature reviews are in high demand in most scientific fields. Their need arises from the ever-increasing production of scientific publications. For example, in comparison, three, eight, and forty times more articles were indexed in Web of Science on malaria, obesity, and biodiversity, respectively. Given these mountains of articles, there are two main types of non-experimental research designs: comparative design and correlational design. In comparative research, the researcher examines the differences between two or more groups on the phenomenon being studied. For example, studying the gender difference in mathematics learning is comparative research. Example: Research objective. To examine factors contributing to muscle retention in a group of older adults. Example: Research objectives. To assess the relationship between sedentary habits and muscle atrophy in participants. Determine the impact of dietary factors, particularly protein consumption, on muscle health.