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In: Math

The Company collected a sample of the salaries of its employees. There are 70 salary data...

  1. 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 8
10,001–15,000 12
15,001–20,000 20
20,001–25,000 17
25,001–30,000 13
  1. Find the standard deviation.
  2. Find the variance.

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