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STATISTICS — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSSTATISTICS1 Mark
MCQ
Choose the correct answer. Following are the marks obtained by 9 students in a mathematics test: 50, 69, 20, 33, 53, 39, 40, 65, 59 The mean deviation from the median is:
  • A
    9
  • B
    10.5
  • ✓
    12.67
  • D
    14.76
✓

Answer

Correct option: C.
12.67
  1. 12.67
Solution:
$\therefore\ \text{Median}=5^{\text{th}}\text{ term}$
$\text{M}_\text{e}=50$
$x_i$ $d_i = |x_i - M_e|$
20 30
33 17
39 11
40 10
50 0
53 3
59 9
65 15
69 19
N = 2 $\sum\text{d}_\text{i}=114$
$\therefore\ \text{MD}=\frac{114}{9}=12.67$

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