Domain 2 covers survey methodology (HCAHPS, CAHPS family, Press Ganey, NRC, custom), sampling, response rates, and statistical significance, top-box vs. mean score reporting, benchmarking, percentile ranks, and risk adjustment, data visualization for executive audiences, and linking experience metrics to clinical, financial, and safety outcomes. Skills the exam tests include: choosing the right measurement tool for the question being asked, interpreting score changes (real signal vs. statistical noise), communicating data to non-data audiences, and selecting drivers that actually move composite scores. The dedicated domain course includes video lessons, key terminology flashcards, and 25+ practice questions with rationale. Or get all four domains plus the master question bank in the Complete CPXP Bundle for $149.97 — saving you $50.