Q71.If the mean of 4, 7, 2, 8, 6 and a is 7 , then the mean deviation from the median of these observations is (1) 8 (2) 5 (3) 1 (4) 3
What This Question Tests
Tests the ability to first find an unknown value using the mean, then calculate the median, and finally compute the mean deviation from the median.
Concepts Tested
Formulas Used
Mean = (Sum of obs)/n
Median = ( (n/2)th + (n/2+1)th )/2
Mean deviation = Sum(|x_i - M|)/n
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📋 Question Details
- Chapter
- Statistics
- Topic
- Mean, median, mean deviation
- Year
- 2012
- Shift
- 12 May Online
- Q Number
- Q71
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 15: Statistics
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