The distribution of annual sales tax of different companies in a zone is given below. Find the mean
sales tax of these companies.
Sales tax (thousand) 0 – 10 10 – 20 20 – 30 30 – 50 50 – 70
No. of companies 3 14 32 40 21
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sales tax of these companies.
Sades tax (thousand) 0-10 10-20 20 - 30 30 - 50 50 - 70
No. of companies
3
40
21
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