数据分析

Statistical Analysis

Use when conducting statistical hypothesis tests (t-test, ANOVA, chi-square, non-parametric), regression, correlation, or Bayesian analyses on research data. Also use when selecting appropriate statistical tests, checking and recovering from assumption violations, calculating effect sizes, conducting power analyses, or formatting results in APA style. NEVER use for machine learning model evaluation or hyperparameter tuning, A/B test design for product experiments (use ab-test-setup), data visualization without statistical inference, or exploratory data analysis without hypothesis testing.