en.wikipedia.org/wiki/Factorial_experiment

This experiment is an example of a 2<sup>2</sup> (or 2x2) factorial experiment, so named ...
Designs can involve many independent variables.

www.socialresearchmethods.net/kb/expfact.php

Probably the easiest way to begin understanding factorial designs is by looking
at an example. Let's imagine a design where we have an educational program ...

www.socialresearchmethods.net/kb/expfact2.php

Finally, we'll present the idea of the incomplete factorial design. ... Note that the
setting factor in this example has three levels. The first figure shows what an ...

web.mst.edu/~psyworld/between_subjects.htm

For example, let's say that we are interested in studying the effect of room
temperature on ... variables; the 2 X 2 ("two by two") between-subjects factorial
design.

study.com/academy/lesson/what-is-factorial-design-definition-example.html

The simplest studies involve one independent and one dependent variable. But
what happens when a researcher wants to study more than one...

www.itl.nist.gov/div898/handbook/pri/section3/pri3332.htm

A Full Factorial Design Example. An example of a full factorial design with 3
factors, The following is an example of a full factorial design with 3 factors that
also ...

explorable.com/factorial-design

A factorial design is often used by scientists wishing to understand the effect of ...
the researchers could also test, for example, 4 levels of concentration for the ...

onlinecourses.science.psu.edu/stat503/node/33

5.2 - Another Factorial Design Example - Cloth Dyes. Printer-friendly version.
Consider the cloth dyes data from Problem 5.19 in the text: For each combination
of ...

onlinecourses.science.psu.edu/stat503/node/31

5.1 - Factorial Designs with Two Treatment Factors. Printer-friendly .... This
example simply illustrates that the cell means in this case have additive structure.

www.3rs-reduction.co.uk/html/10__factorial_experiments.html

For example, ”Gender” might be a factor with two levels “male” and “female” and
... A factorial design is one involving two or more factors in a single experiment.