Data Analysis Skill

Analyze data files (CSV, Excel) and produce actionable insights.

Quick Start

1. Read the file - Use appropriate library:

   • CSV: csv module or pandas.read_csv()
   • Excel: pandas.read_excel() with openpyxl engine

2. Explore the data - Get shape, columns, dtypes, missing values

3. Generate insights - Calculate:

   • Descriptive stats (mean, median, mode, std, min, max)
   • Correlations between numeric columns
   • Value counts for categorical columns
   • Trends over time if date column exists