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This heatmap provides a visual overview of how each variable relates to the others in the dataset. The values range from -1 (perfect negative correlation) to 1 (perfect positive correlation), with 0 indicating no relationship.
Key Insights:
Total VOC Removed (μg) is highly correlated with:
Total TCE Removed (μg): 0.92
Total Benzene Removed (μg): 0.81
Total Formaldehyde Removed (μg): 0.83
➤ This makes sense—it’s the sum of these three.
Leaf Surface Area (cm²) has a moderate positive correlation with:
Total Formaldehyde Removed (μg): 0.86
➤ Suggesting that larger leaves may boost formaldehyde absorption specifically.
Interesting anomaly:
Total Formaldehyde Removed (μg) is negatively correlated with both Benzene and TCE removal. This could indicate plant specialization or differences in metabolic uptake patterns across species.
Why It Matters:
Understanding these relationships helps identify:
Which metrics are most closely tied together
Which types of plants are chemically specialized
Where should efforts focus when selecting houseplants for targeted air purification
This heatmap serves as a powerful tool for refining your air quality strategies.
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