Question

6. Find the mean of the following data :
Classes : 0-20 20-40 40-60 60-80 80-100
Frequency: 6 8
10
12
7. The daily income of a sample of 50 employees are tabulated as follows:
Income (in Rs) 1-200
400-600 600-800
No. Of Employees
14
15
7
14​

Answer 1

no of employees are 14

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