Problem 4: Build a 2x2 Dashboard of Four Charts

Problem Description

Write a Python program that creates a 2x2 grid of subplots showing four different simple charts (e.g., line, bar, scatter, histogram), each with its own title, and uses tight_layout() to keep everything readable.

Input

Four small datasets, one for each chart type.

Output

A displayed 2x2 dashboard figure.

Constraints

• Use plt.subplots(2, 2).

Example Input

text
(Four small datasets suitable for line, bar, scatter, and histogram charts)

Example Output

text
(A 2x2 grid figure showing all four chart types, cleanly laid out)

Concepts Covered

plt.subplots(2, 2), axes[row, col], tight_layout().