Multiple choice

Following are the marks obtained by 9 students in Mathematics test: $50,69,20,33,53,39,40,65,59$ The mean deviation from the median is

  1. $9$
  2. $10.5$
  3. $12.67$
  4. $14.76$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Data: 20, 33, 39, 40, 50, 53, 59, 65, 69. Median = 50. Deviations: |20-50|=30, |33-50|=17, |39-50|=11, |40-50|=10, |50-50|=0, |53-50|=3, |59-50|=9, |65-50|=15, |69-50|=19. Sum = 114. Mean deviation = 114 / 9 = 12.666...

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