CBSE · Class 9 · Mathematics · StatisticsThe class mark of the class interval 10-25 is:
Step-by-Step Solution
The class mark of a class interval is calculated as (Upper limit + Lower limit) / 2. For the interval 10-25, Class mark = (25 + 10) / 2 = 35 / 2 = 17.5.
Detailed Options Breakdown
Option : 10
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
Option 1: 25
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
Option 2: 17.5 (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: 15
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
💡 Study Guide: This question tests core syllabus concepts from Statistics. For formulas, key summaries, and mock exam reference guides, read the full Statistics Revision Notes.