The weight of 50 workers is given below:
Weight in kg |
50-60 |
60-70 |
70-80 |
80-90 |
90-100 |
100-110 |
110-120 |
No. workers |
4 |
7 |
11 |
14 |
6 |
5 |
3 |
Draw an ogive of the given distribution using a graph sheet. Take 2 cm = 10 kg on one axis and 2 cm = 5 workers along the other axis. Use a graph to estimate the following:
(i) the upper and lower quartiles.
(ii) if weighing 95 kg and above is considered overweight find the number of workers who are overweight.