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5.The Company collected a sample of the salaries of its employees. There are 70 salary data points summarized in the frequency distribution below: Salary Number

5.The Company collected a sample of the salaries of its employees. There are 70 salary data points summarized in the frequency distribution below:

Salary

Number of Employees

5,001-10,000

10,001-15,000

15,001-20,000

20,001-25,000

25,001-30,000

a.Find the standard deviation.

b.Find the variance.

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