পদ্ধতির তুলনা করুন

	ক্রসওভার ভগ্নাংশ ফ্যাক্টোরিয়াল পরীক্ষা	ফ্যাক্টোরিয়াল এক্সপেরিমেন্ট
ক্ষেত্র	পরীক্ষামূলক নকশা	পরীক্ষামূলক নকশা
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1950s–1970s (fractional factorial from 1940s; crossover integration from 1960s–1970s)	1926–1935
প্রবর্তক	Box, Hunter & Hunter (fractional factorial); Senn & Williams (crossover integration)	Ronald A. Fisher
ধরন	Within-subject multi-factor experimental design	Quantitative experimental design
মৌলিক উৎস	Senn, S. (2002). Cross-over Trials in Clinical Research (2nd ed.). Wiley. ISBN: 978-0471496533	Fisher, R. A. (1935). The Design of Experiments. Oliver and Boyd.
অপর নাম	crossover FF design, within-subject fractional factorial, repeated-measures fractional factorial, crossover FFE	factorial design, factorial ANOVA design, multi-factor experiment, crossed-factor design
সম্পর্কিত	5	6
সারসংক্ষেপ	A crossover fractional factorial experiment is a within-subject design in which each participant receives a strategically chosen subset of all possible factor-level combinations in a defined sequence, with washout periods between treatment periods. By combining the run-economy of fractional factorial designs with the within-subject efficiency of crossover designs, it allows estimation of main effects and selected interactions while controlling for between-subject variability using far fewer participants and experimental runs than a full factorial crossover.	A factorial experiment is an experimental design in which two or more independent variables (factors) are manipulated simultaneously, and every combination of their levels is tested. Introduced by Ronald Fisher in the 1920s–1930s, it is the standard approach whenever a researcher needs to detect not only the main effect of each factor but also whether the effect of one factor depends on the level of another — the interaction effect.