Definition of Variable in Statistics
In statistics, values that vary from year to year or from crop to crop are called:
- Constants
- Parameters
- Variables — Correct Answer
- Observations
Explanation:
Correct Answer Explanation
Values that change or vary are called Variables. Each value of a variable is called an observation.
Key Points:
- Variables are generally represented by letters X, Y or Z.
- Each individual value of a variable is called an observation.
- Example: Food grain production in India varied from 108 million tonnes (1970-71) to 272 million tonnes (2016-17).
- A constant does not change, while a variable does.
Why Other Options Are Wrong
- A. Constants: Constants do not change — opposite of variables.
- B. Parameters: Parameters describe population characteristics, not individual varying values.
- D. Observations: An observation is each single value of a variable, not the varying values themselves.
📚 About this Topic — CH-2: Collection of Data
This multiple choice question is from CH-2: Collection of Data, NCERT Books, Statistics for Economics. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from CH-2: Collection of Data to strengthen your preparation.
