Give me answers urgently
From the following data, calculate coefficient of quartile deviation. Also find the range of wages of middle 50% of workers.
quartile range of wages
Wages Less than | No. of Workers |
10 | 5 |
20 | 8 |
30 | 15 |
40 | 20 |
50 | 30 |
60 | 33 |
70 | 35 |