Question
Calculate the median by using less than and more than ogive:
|
Marks |
0-5 |
5-10 |
10-15 |
15-20 |
20-25 |
25-30 |
30-35 |
35-40 |
|
Number of Students |
4 |
6 |
10 |
10 |
25 |
22 |
18 |
5 |
Solution
Calculation of the Median less than and more than ogive :
|
Marks |
cf. |
Marks |
c.f. |
||
|
less than 5 less than 10 less than 15 less than 20 less than 25 less than 30 less than 35 less than 40 |
4 10 20 30 55 77 95 100 |
more than 0 more than 5 more than 10 more than 15 more than 20 more than 25 more than 30 more than 35 more than 40 |
100 96 90 80 70 45 23 5 0 |
||
Less than and more than ogive :
