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pandas
Tools Intermediate 2 years experience

Summary#

Proficient with pandas for data manipulation, cleaning, and analysis. Applied across multiple data science projects for EDA, feature engineering, and data preprocessing.

How I Apply This Skill#

  • Performed comprehensive EDA including missing value analysis, statistical summaries, and correlation matrices
  • Applied feature engineering techniques including binning, encoding, and derived columns
  • Handled missing data with mode manipulation, mean filling, and strategic dropping
  • Joined datasets on common keys for combined analysis
  • Exported processed data for model training and visualization
  • Aggregated 712k+ rows across six COVID-19 CSVs (including 627,920 daily US county records) into daily and weekly views for animated choropleths
  • Built a shared country-name reconciliation layer that maps between Johns Hopkins, Worldometer, and Plotly country conventions before downstream joins
  • Implemented weekly downsampling (every 7th date) to reduce 188 daily frames to ~27 for responsive animations without losing the trend

Key Strengths#

  • Data Cleaning: Null handling, type conversion, removing duplicates
  • Feature Engineering: Categorical encoding, binning, derived features
  • Analysis: Aggregations, statistical summaries
  • Data I/O: CSV, Excel, SQL database integration
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