[AB180] Retention Playground

	A	B	C	D	E	F
1	유료 고객 및 비유료 고객의 Retention Data 분석
2	원본 데이터: https://analytics.amplitude.com/demo/chart/new/l6yurzx
3	설명 보러가기: https://blog.ab180.co/posts/deep-dive-into-retention
4		Data Summary				( last 7 days, % )
5		Cohort	count*	n-day	unbounded	brackets**
6		≠ purchase	24,686	15.5%	17.0%	28.1%
7		= purchase	7,163	30.9%	35.9%	52.9%
8		* count : unique user count ** bracket : 4 different periods seperated by 0-1 day / 2-4 day / 3-6 day / 7 day
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10		retention event type	event property
11		starting event	new user
12		return event	any active event
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