cohort analysis
B2CEFR level
60/100Rarity: rare
TechnicalRegister
A method that tracks groups of users who share a common start point over time to compare how their behaviour evolves.
Cohort analysis showed that users who joined after the redesign retained far better at 30 days.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
Get words like cohort analysis on your lock screen, a few a day, with review that makes them stick.
Download on the App Store Lexfall puts a new word on your home and lock screen through widgets, so you learn without opening an app. Free to download. After a free trial, a subscription unlocks every field. Built for iPhone, iOS 15.1 or later.
On a computer?Scan with your iPhone camera.