Undesirable Open-Ended Class Intervals
Which of the following class intervals is NOT desirable in a frequency distribution?
- 40–50
- 70 and over — Correct Answer
- 60–70
- 20–30
Explanation:
Correct Answer Explanation
Open-ended class intervals such as '70 and over' or 'less than 10' are generally not desirable in a frequency distribution.
Key Points:
- Open-ended classes have no defined upper or lower limit.
- They make it impossible to calculate class mark precisely.
- Class limits should be definite and clearly stated.
- The lower and upper class limits should be determined so that frequencies tend to concentrate in the middle of the class interval.
📚 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.
