Data Science

Heatmaps and Correlation Analysis

Senior Data Analyst

April 27, 2026

5 min read

Correlation Matrix

corr = df.corr()

sns.heatmap(corr, annot=True, cmap='coolwarm')

plt.title('Feature Correlation')

plt.show()

Interpretation

**+1**: Perfect positive correlation.

**-1**: Perfect negative correlation.

**0**: No correlation.

*Day 118: Interactive Charts with Plotly.*

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