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Find answers to frequently-asked questions about Amplitude.
FAQs: Segment / Amplitude integration
FAQ: Why are events failing to ingest for users on Firefox?
FAQ: Retention analysis in Amplitude
FAQ: Behavioral cohorts in Amplitude
FAQ: Trouble logging into or accessing Amplitude
FAQ: What's the difference between hiding, blocking, and deleting an event or property?
FAQ: Funnel Analysis
FAQ: How does the Personas chart calculate clusters?
FAQ: What is the Scholarship Plan?
FAQ: How Amplitude calculates chance to outperform and statistical significance in A/B tests
FAQ: Modify or delete historical data
FAQ: Exporting .CSV files
FAQ: Event Segmentation
FAQ: What do Apple’s iOS 14 IDFA changes mean?
Troubleshooting the Segment / Amplitude integration
FAQ: Instrument Amplitude on third-party website builders
FAQ: Can I export all raw data for this chart/event?
FAQ: What does the dotted line in the chart mean?
FAQ: In the Events Module, how can I group two or more events together as a single step?
Behavioral cohorts FAQ: Identifying users who lack user properties or did not perform events
FAQ: Why are there so many zero-length sessions in my User Session chart?
FAQ: How to block and filter out internal users
FAQ: Why is this user counted under '(none)' or an unexpected value?