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Data Science · Module 5 of 10

Exploratory data analysis

Explore data with statistics and charts.

📖 Key ideas

  1. Summary stats: mean, median, std, percentiles (df.describe()).
  2. Distributions with histograms and box plots.
  3. Relationships with scatter plots and correlation heatmaps.
  4. Compare groups with bar charts and groupby.
  5. Write down hypotheses and surprises.
💡 Real-life example: EDA is walking around a new city before planning a tour.
EDAExploratory Data Analysis
HistogramDistribution chart
CorrelationStrength of linear relationship
HeatmapColour-coded matrix