What does CI mean?
Definition of CI in the context of A/B testing (online controlled experiments).
What is CI?
For a definition of CI see Confidence Interval.
Articles on CI
P-values and Confidence Intervals Explained
blog.analytics-toolkit.com
Confidence Intervals & P-values for Percent Change / Relative Difference
blog.analytics-toolkit.com
Concise guide to A/B testing statistics
blog.analytics-toolkit.com