A factorial design is an experimental methodology in which two or more independent variables (factors) are varied simultaneously across two or more discrete levels. Its parameters: (1) number of factors, (2) levels per factor, (3) assignment of experimental units to factor-level combinations. The design enables estimation of main effects for each factor and interaction effects between pairs or groups of factors. A full factorial tests all possible combinations; a fractional factorial tests a representative subset. Its persistence mechanism is through publication, teaching, and replication in scientific practice. [formal: factorial-design | substrate: mind | horizon: a life | explicit: yes | epoch: 0.01]
Accepted ontology entry
factorial-design
A factorial design is an experimental methodology in which two or more independent variables (factors) are varied simultaneously across two or more discrete levels. Its parameters: (1) number of factors, (2) levels per factor, (3) assignme…
Definition
Why it is in scope
A systematic experimental method where two or more independent variables (factors) are manipulated simultaneously across defined levels, allowing researchers to assess both individual effects and interactions between factors. Human-made experimental methodology designed to efficiently study multiple variables and their interactions within a single experiment.
Names and aliases
- factorial-designen · CANONICAL
Relations from this entry
- cmrvpfry601wq2ceichuy36vpINSTANCE_OF →
Factorial design IS a specific kind of experimental design: it structures experiments by manipulating multiple factors simultaneously across defined levels. A competent speaker would call it 'a type of experimental design.' Nearest kind is experimental-design — no intermediate rung exists.
- cmrsphori001z145ry0zfwwzrINSTANCE_OF →
Nearest-kind check: factorial-design IS a specific kind of method — an experimental design method that varies multiple factors simultaneously to study their individual and interactive effects. Competent-speaker test passes: a competent speaker would call factorial-design 'a method.' Law 9, 9a satisfied.
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Record identity
- Created
- Jul 30, 2026, 3:10 PM UTC
- Content hash
- 62a41b969231cb36dc9083c41c356ac54ae5ae356007b12762e242e45f40c73e