Scatter Plot 🌌

Visualizing Relationships

Scatter plots are the best way to visualize the relationship (correlation) between two numerical variables.

✨ Creating a Scatter Plot

python

import matplotlib.pyplot as plt

x = [5,7,8,7,2,17,2,9,4,11,12,9,6]
y = [99,86,87,88,111,86,103,87,94,78,77,85,86]

plt.scatter(x, y)
plt.show()

📈 Correlation

What are we looking for?

Positive Correlation: As x increases, y increases.
Negative Correlation: As x increases, y decreases.
No Correlation: No visible pattern.

💡 Large Datasets

Scatter plots are excellent for large datasets (e.g., 1000+ points) to see clusters and density.

python

import numpy as np
import matplotlib.pyplot as plt

x = np.random.normal(5.0, 1.0, 1000)
y = np.random.normal(10.0, 2.0, 1000)

plt.scatter(x, y)
plt.show()