We have the gross earnings of the 6 employees. To obtain the average amount earned for the week by these employees we need to sum all the gross earnings and divide the result by 6 (the total of employees). Then, we have:
[tex](620+524+715+670+588+675)/6_{}_{}[/tex]Then, we have:
[tex]A=\frac{3792}{6}\Rightarrow A=632[/tex]Then, the average amount earned for the week by these employees was $632.