Conversion Optimisation
Confidence Interval
Definition
A glossaryConfidenceConfidence is the level of certainty in a decision or outcome based on available evidence.Open glossary term interval is a statistical range that estimates where the true value of a result is likely to fall.
In practice
Used in glossaryExperimentAn experiment is a structured test used to evaluate hypotheses and measure outcomes.Open glossary term like guideA/B TestingComparing live variations with controlled experiments to identify which design or content change performs better.Open guide to assess how reliable results are.
The reality
Often misunderstood, especially when teams focus only on significance and ignore uncertainty.
Plain English
How sure you can be about a result.
FAQ
Common questions
A few practical answers to the questions that usually come up around this term.
What is a confidence interval?
It is a range that shows where the true value is likely to be.
What does 95 percent confidence mean?
The result would fall in that range 95 percent of the time if repeated.
Why is it important?
It shows how reliable your glossaryDataData is raw information collected and stored for analysis, processing, or decision-making.Open glossary term is.
What does a wide interval mean?
The result is less certain.
Related Services
Related Guides
Related Terms