Tag: data-analysis
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Your First Data Analysis Project: CSV to Insights Guide
Learn data analysis fundamentals with a hands-on CSV project. Master Pandas, visualization, and insights extraction in this beginner-friendly guide.
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Pandas Time Series Resample: OHLC 14x Faster Than Custom
Pandas resample OHLC beats custom groupby 14x faster for time series aggregation. Discover why built-in wins and when to use which method.
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Pandas Memory Optimization: Cut RAM Usage by 90% on Large CSVs
Optimize Pandas memory usage and cut RAM by 90% when loading large CSVs. Learn dtype tricks, chunking, and category conversion techniques.
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Excel Pivot Tables to Pandas GroupBy: Migration Guide
Excel pivot tables break at 500MB. Pandas groupby handles 1M rows in 18ms. See the actual migration steps with messy data and real pitfalls.
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Gold Price Patterns: 10 Years of Market Data Analysis
10 years of gold price data reveals 3 volatility regimes and non-stationary patterns that ARIMA and LSTM models systematically miss.