help me please....
The data on the profit (in Rs lakh) earned by 60 companies is follows:
Profits
Below 10
10-20
20-30
30-40
40-50
50 and over
No. of companies
5
12
20
16
5
2


1: Obtain the limits of profit of the central 50 percent companies.
2: Calculate Bowley’s coefficient of skewness.