Types of Variables and Distributions
Investigators must have a thorough understanding of the types of variables they might encounter as part of their research. Variables can be described using distributions. Some common distributions are described, along with specific types of variables, including independent, dependent, and confounding variables, which are defined and described. Understanding variables and distributions is imperative for planning and interpreting research studies.
KeywordsVariables Distributions Parameters
- 5.Gourgou-Bourgade S, Cameron D, Poortmans P, et al. Guidelines for time-to-event end point definitions in breast cancer trials: results of the DATECAN initiative (Definition for the Assessment of Time-to-Event Endpoints in Cancer Trials). Ann Oncol. 2015;26(5):873–9. https://doi.org/10.1093/annonc/mdv106.CrossRefPubMedPubMedCentralGoogle Scholar
- 8.McDonald JH. Handbook of biological statistics. 3rd ed. Baltimore, MD: Sparky House Publishing; 2014. p. 24–8.Google Scholar