MP Board · Class 10 · Mathematics · StatisticsIf the mean of five numbers is 30 and if one number is excluded, their mean becomes 28. The excluded number is:
Step-by-Step Solution
Sum of 5 numbers = (5 \times 30 = 150). Sum of remaining 4 numbers = (4 \times 28 = 112). Excluded number = (150 - 112 = 38). Therefore, option D is correct.
Detailed Options Breakdown
Option : 28
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
Option 1: 30
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
Option 2: 35
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Statistics.
Option 3: 38 (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
💡 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.