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The data file Salary.xlsx contains information about the following five variables for employees in a


y = beginning monthly salaries in dollars (Salary)

x1 = number of years of schooling at the time of hire (School)

x2 = number of months of previous work experience (Experience)

x3 = number of months since the employee was hired (Months)

x4 = dummy variable coded 1 for male employees and 0 for female employees (Male)

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