Find the value of the median from the following data
Marks:100-110 110-120 120-130 130-140 140-150 150-160
No of students: 14 15 20 22 32 18
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Answer:
Marks f Cf
100-110 14 14
110-120 15 29
120-130 20 49
130-140 22 71
140-150 32 103
150-160 18 121
Total => 121
Median :
n = 121 ( odd )
(n+1/2) th term
____________
2
(121+1/2) th term
_____________
2
122 th term
__________
2
61 th term
ans : 120-130
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