| Height |
Boys (f) |
c.f |
Girls (f) |
c.f. |
| 135 |
2 |
2 |
1 |
1 |
| 140 |
5 |
7 |
2 |
3 |
| 147 |
12 |
19\(\leftarrow\) |
10 |
13 |
| 152 |
10 |
29 |
5 |
18\(\leftarrow\) |
| 155 |
7 |
36 |
6 |
24 |
| 160 |
1 |
37 |
5 |
29 |
|
|
N = 37 |
N = 29 |
|
Boys median class = \(\frac {37+1}{2} = \frac {38}{2}\) = 19th
observation
∴ Median height of boys = 147 cm
Girls median class = \(\frac {29+1}{2} = \frac {30}{2}\) = 15th
observation
∴ Median height of girls = 152 cm
