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GEO Glossary

Answer variance

Term from the world of AI visibility – explained simply by the GeoTrova team.


Definition

AI systems don't always give the same answer to the same prompt. The variation between individual queries is called answer variance.

Want to know how your brand stands on this topic? GeoTrova measures your AI visibility across ChatGPT, Google AI Overviews, Gemini, Perplexity, Microsoft Copilot and Google AI Mode – First measurement in minutes · 7 days free, charged only afterwards.

In depth

Where it comes from

Language models generate text with a random component. On top of that come changing search results, location and model updates. A single query is therefore a sample, not a measurement – deciding based on one screenshot means deciding by chance.

How to measure reliably anyway

With repetition over days, many prompts instead of single ones, and a fixed location per prompt. GeoTrova measures repeatedly at the set cadence, shows trends instead of single values, and states the numerator and denominator for every visibility figure – so you can see how many answers a value is based on.

Frequently asked questions
Personalisation, conversation history, location and the variance itself. That's why GeoTrova measures without personal history and repeats the measurement.
There's no fixed number. Trends over several weeks are more reliable than single days.

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