Marks | 0-10 | 10-30 | 30-60 | 60-80 | 80-100 |
Frequency | 5 | 15 | 30 | 8 | 2 |
Answer:
Here, the class intervals are of unequal width. If the
class intervals are of unequal width, the frequencies need not be adjusted to
make the class intervals equal.
Here, N = 60 N/2 =
30
The cumulative frequency just greater than N/2 = 30 is 50
and the corresponding class is 30-60.
Hence, 30-60 is the median class.
Now, Median
Marks
No of students (Frequency)
Cumulative
frequency
0-10
10-30
30-60
60-80
80-80
5
15
30
8
2
5
20
50
58
60
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