Interpretation of Continuous Variable Class
For continuous variables like height (in centimeters), a class interval '30 Kg - 39.999... Kg' is understood to mean:
- 30 Kg and 39.999 Kg only
- 30 Kg and above and under 40 Kg — Correct Answer
- 30 Kg and above and including 40 Kg
- Only values between 31 and 39
Explanation:
Correct Answer Explanation
The class '30 Kg – 39.999... Kg' means '30 Kg and above and under 40 Kg'.
Key Points:
- For continuous variables like height and weight, class intervals are defined to include all values in a range.
- 30–39.999... Kg = 30 ≤ x < 40 (includes 30, excludes 40)
- 40–49.999... Kg = 40 ≤ x < 50 (includes 40, excludes 50)
- This ensures continuity — every possible value falls in exactly one class.
📚 About this Topic — CH-3: Organisation of Data
This multiple choice question is from CH-3: Organisation of Data, NCERT Books, Statistics for Economics. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from CH-3: Organisation of Data to strengthen your preparation.
