data-cohort-analysis
Cohort Analysis
Framework
IRON LAW: Aggregate Metrics Hide Cohort Differences
A 70% monthly retention rate OVERALL can mask that January cohort retains
at 85% while June cohort retains at 50%. Aggregate metrics blend improving
and deteriorating cohorts together, hiding both problems and progress.
ALWAYS analyze by cohort before drawing conclusions.
Core Concepts
Cohort: A group of users who share a common characteristic in a specific time period. Most common: acquisition cohort (grouped by signup month).
Retention Matrix: Rows = cohorts (by signup month), Columns = time periods after signup (Month 0, 1, 2...). Cells = % of cohort still active.
More from asgard-ai-platform/skills
xborder-logistics
Design cross-border logistics strategies including direct mail, overseas warehousing, and bonded warehouse models for international e-commerce. Use this skill when the user needs to ship products internationally, choose a logistics model for cross-border sales, optimize shipping costs, or set up fulfillment in a foreign market — even if they say 'ship to Southeast Asia', 'overseas warehouse vs direct shipping', 'customs clearance', or 'reduce international shipping time'.
65tw-stock-analysis
Analyze Taiwan-listed stocks using fundamental analysis including EPS, P/E ratio, dividend yield, and financial statement review. Use this skill when the user needs to evaluate a Taiwan stock, compare TWSE/TPEx-listed companies, assess valuation, or review earnings — even if they say 'should I buy this stock', 'analyze 台積電', 'is this stock overvalued', or 'compare these two Taiwan companies'.
47econ-macro-indicators
Interpret macroeconomic indicators including GDP, inflation, unemployment, interest rates, and exchange rates to assess economic health and predict trends. Use this skill when the user needs to evaluate a country's economic outlook, understand monetary/fiscal policy impacts, or contextualize business decisions within the macroeconomic environment — even if they say 'is the economy doing well', 'what do rising interest rates mean for us', or 'explain today's economic data'.
43ecom-multilingual-listing
Optimize multilingual product listings for international e-commerce including SEO localization, machine translation workflows, and cultural adaptation. Use this skill when the user needs to create product listings in multiple languages, optimize for local search, or adapt marketing content for different markets — even if they say 'translate our listings', 'optimize for local SEO', 'adapt for the Japanese market', or 'our translated listings don't convert'.
42law-ip
Analyze intellectual property rights across patents, trademarks, copyrights, and trade secrets. Use this skill when the user needs to understand IP protection options, evaluate whether their work is protectable, assess infringement risk, or design an IP strategy — even if they say 'can I patent this', 'someone copied our design', 'how do we protect our brand name', or 'what IP do we have'.
34pr-social-copywriting
Write platform-optimized social media copy for Instagram, Facebook, LinkedIn, and X/Twitter with hooks, CTAs, and hashtag strategies. Use this skill when the user needs to create social media posts, adapt content across platforms, improve engagement rates, or develop a social content strategy — even if they say 'write a post for IG', 'our social engagement is low', 'adapt this for LinkedIn', or 'how do we write better captions'.
33