Numerical Indices in Statistics
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Question (English)
Which of the following is NOT mentioned as a numerical index used to summarise data?
- Mean
- Variance
- Standard deviation
- Correlation coefficient ✓ Correct
Explanation:
Correct Answer Explanation
Correlation coefficient is not specifically mentioned as a summarisation index. The indices mentioned are mean, variance, and standard deviation.
Key Points:
- Data is summarised by calculating numerical indices.
- These represent broad characteristics of the collected data.
- Example: average income summarises income data of many people.
Why Other Options Are Wrong
- A (Mean), B (Variance), C (Standard Deviation): All are specifically mentioned as summarisation tools.
📚 About this Topic — CH-1: Introduction
This multiple choice question is from CH-1: Introduction, NCERT Books, Statistics for Economics. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from CH-1: Introduction to strengthen your preparation.
