find the median of the grouped data
class. frequency
68-85. 4
85-105. 5
105-125. 13
125-145. 20
145-165. 14
165-185. 8
185-205. 4
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Arranging the data in ascending order,
we have
4,4,5,8,13,14,20
Here the number of observation
n= 7 (odd )
Median =value of (7 + 1 /2)th observation
value of 4th observation is 8 .
so the median is 8.
we have
4,4,5,8,13,14,20
Here the number of observation
n= 7 (odd )
Median =value of (7 + 1 /2)th observation
value of 4th observation is 8 .
so the median is 8.
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