1. What is a National Selection Index?

Definition: The Selection Index is a composite score used to evaluate academic performance, calculated from reading, writing, and math scores.

Purpose: It provides a standardized measure for academic assessment and comparison across different testing systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( SI \) — Selection Index (dimensionless)
• \( R \) — Reading score (dimensionless)
• \( W \) — Writing score (dimensionless)
• \( M \) — Math score (dimensionless)

Explanation: The formula doubles the sum of reading and writing scores, then adds the math score to create a weighted composite index.

3. Importance of Selection Index

Details: The Selection Index provides a comprehensive measure of academic abilities, emphasizing verbal skills while including quantitative reasoning.

4. Using the Calculator

Tips: Enter your reading, writing, and math scores. All values must be ≥ 0. The calculator will compute your Selection Index.

5. Frequently Asked Questions (FAQ)

Q1: Why are reading and writing weighted more heavily?
A: The formula emphasizes verbal skills which are considered fundamental for most academic and professional pursuits.

Q2: What's a good Selection Index score?
A: This depends on the specific context, but generally higher scores indicate stronger academic performance.

Q3: Can I use this for college admissions?
A: While similar to some admission formulas, always check with specific institutions for their exact calculation methods.

Q4: How precise should my input scores be?
A: The calculator accepts scores with one decimal place for precision, but whole numbers are also acceptable.

Q5: What if I only have composite scores?
A: You'll need the individual component scores (reading, writing, math) for this specific calculation.