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UPSC CDS Math Statistics Questions
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Question : 25
Total: 63
The heights (in cm) of 5 students are 150, 165, 161, 144 and 155. What are the values of mean and median (in cm) respectively ?
[2017 CDS-II]
165 and 161
155 and 155
160 and 155
155 and 161
Validate
Solution:
Mean height of 5 students
=
150
+
165
+
161
+
144
+
155
5
=
775
5
=
155
c
m
Arranging the heights of 5 students in ascending order
144 cm, 150 cm, 155 cm, 161 cm, 165 cm
Median = Value of
(
5
+
1
2
)
th
observation = Value of 3rd
observation = 155 cm
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