Data Analysis

Turn raw data into decisions with statistical rigor, proper methodology, and awareness of common analytical pitfalls. This skill focuses on extracting insights from data while avoiding common mistakes.

When to Use

Use this skill when you need to:

• Statistical analysis: Compare groups, test hypotheses, find significance
• Trend identification: What's changing? In which direction? How fast?
• Pattern discovery: Segment users, identify behaviors, find correlations
• Anomaly detection: What's unusual? What warrants investigation?
• Decision support: Data-driven recommendations backed by analysis
• A/B testing: Evaluate whether changes actually work
• Cohort analysis: How do different user groups behave?
• Root cause analysis: Why did something happen?