Feature Scaling example 15

What this example teaches

Feature Scaling

Output

The experiment prepares features, labels, metrics and validation rows, trains or scores a small model pattern, and prints a metric you can compare.

Line-by-line explanation

• Line 1 sets up the Feature Scaling example: values = [10, 20, 30, 40, 50].
• Line 2 adds one required part of the working pattern: mean = sum(values) / len(values).
• Line 3 adds one required part of the working pattern: variance = sum((value - mean) ** 2 for value in values) / len(values).
• Line 4 adds one required part of the working pattern: std = variance ** 0.5.
• Line 5 adds one required part of the working pattern: scaled = [round((value - mean) / std, 2) for value in values].
• Line 6 exposes the output so you can verify the behavior: print(scaled).

Why this example is useful

This example is useful because it isolates feature scaling without surrounding noise, so you can see the idea clearly.

Where it is used in real projects

Feature Scaling appears in real Machine Learning work when a feature needs a clear pattern that can be reviewed and changed safely.

Beginner variation

Change one label, value or condition in the Feature Scaling example and run it again.

Advanced variation

Combine Feature Scaling with validation, error handling or reusable structure.