Problem 1: Apply Standardization to a Dataset

Problem Description

Write a Python program that applies StandardScaler to a DataFrame with two numeric columns, and prints the scaled result.

Input

A DataFrame with two numeric columns.

Output

The standardized DataFrame (mean 0, std 1 for each column).

Constraints

• Columns will contain at least 3 numeric values each.

Example Input

text
{"age": [20, 30, 40], "salary": [30000, 50000, 70000]}

Example Output

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(Standardized values with mean approximately 0 and std approximately 1 for each column)

Concepts Covered

StandardScaler, fit_transform().