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Multivariate Test
An experiment that changes several elements at once (headline, image, CTA) and measures combinations. It needs more traffic than a simple A/B test.
Detailed explanation
A/B finds a winner on one change. Multivariate testing also looks for interactions: does the red button only win with the short headline? Combination count explodes sample-size needs.
On small sites MVT often dies unfinished. Run A/B on big levers (H1, offer) first, then MVT if volume allows.
Statistical power, other simultaneous changes, and seasonality distort results. Stopping early creates fake winners.
Frequently asked questions
- Should MVT always replace A/B?
- No. Low traffic favors A/B. MVT wants many combinations and high volume.
- How long should it run?
- Until the pre-calculated sample is reached, including weekday/weekend cycles. Do not call it on day two.
Related terms
Internal links for the topic cluster — read these concepts together.
- A/B TestAn A/B Test is an experiment method that shows two (or more) variants at the same time and compares which performs better using statistical evidence.
- CROCRO (Conversion Rate Optimization) is the systematic process of testing and improving experiences so existing traffic converts at a higher rate.
- Landing PageThe first page a visitor hits after an ad, email, or search click—built for one job. Unlike a homepage, it trades navigation clutter for a promise, proof, and a single call to action.
- CTAThe button, link, or line that names the next step you want someone to take. Vague labels like “learn more” may collect clicks and still fail the conversion.
- HeatmapA visual of click, scroll, or movement density on a page. It shows what people notice and what they ignore.