Reading paths
Audience research
Start with customer needs, segmentation and targeting.
Explore this topic →Frameworks and growth
Connect product-market choices with the four Ps.
Explore this topic →Channel strategy
Compare content, search, social, email, paid and offline activity.
Explore this topic →Statistics in context
Keep populations, denominators and release dates attached.
Explore this topic →Measurement
Distinguish attribution, experiments and mix modeling.
Explore this topic →Budget and economics
Explore the reproducible contribution and break-even example.
Explore this topic →
How to interpret the evidence
Surveys describe their stated respondents and observation periods. Experimental research answers a specific causal question. Technical documentation describes methods. Practical examples and planning procedures are editorial applications, not measured case studies.
The source directory matches the article. The chart data CSV records values, units and evidence types for the three original charts.
Versions and limitations
The retail chart preserves the original August 18, 2026 Census release. Census subsequently flagged those estimates as no longer the most up to date; the release date remains visible. The AI survey section uses the authors’ accessible AMA recap. Observation dates differ from the source-check date.
Read the editorial policy and revision history.