Definition of rigorous
1
: manifesting, exercising, or favoring rigor : very strict

https://www.merriam-webster.com/dictionary/rigorous

rigorous przymiotnik
▸rygorystyczny, surowy, ścisły, dokładny, wnikliwy, drobiazgowy

http://translatica.pl/szukaj/po-polsku/rigorous.html


Rigorous (“trustworthy”) research is research that applies the appropriate research tools to meet the stated objectives of the investigation. For example, to determine if an exploratory investigation was rigorous, the investigator would need to answer a series of methodological questions: Do the data collection tools produce information that is appropriate for the level of precision required in the analysis? Do the tools maximize the chance of identifying the full range of phenomenon of interest? To what degree are the collection techniques likely to generate the appropriate level of detail needed for addressing the research question(s)? To what degree do the tools maximize the chance of producing data with discernible patterns? Once the data are collected, to what degree are the analytic techniques likely to ensure the discovery of the full range of relevant and salient themes and topics? To what degree do the analytic strategies maximize the potential for finding relationships among themes and topics? What checks are in place to ensure that the discovery of patterns and models is not superfluous? Finally, what standards of evidence are required to ensure readers that results are supported by the data?

http://atlasti.com/rigor-social-science-research/

When a study fails to measure what it intends to measure, validity of the consequent result declines and evidence provided by the study is suspect. Study results can be erroneous because of bias, confounding, or chance. Methodologically rigorous studies seek to minimize the first two by design and the latter two by analysis. Bias refers to “any trend in the collection, analysis, interpretation, publication, or review of data that can lead to conclusions that are systematically different from the truth.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3531969/