Questions
Find the mean deviation about median for the following data.
| Marks | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
| Number of Girls | 6 | 8 | 14 | 16 | 4 | 2 |
a
10.34
b
10.50
c
10.40
d
10.37
detailed solution
Correct option is A
N2=502=25C=14,f=14,l=20,h=10MdianM=1+N2−Cf×h=20+25−1414×10=20+11×1014=20+7.86=27.86∴ Mean deviation about median =Σfixi−MΣfi=517.1650=10.34Talk to our academic expert!
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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
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