Use the data given below to answer the following question(s). following is an extract from the employee payroll database of hfr informatics inc. employee ethnic group gender rank / grade pay scale maria asian american female 3 a peter white american male 2 b george hispanic american male 1 c smith black american female 1 d johnson alaska native male 2 e thompson asian american male 2 b martinez alaska native male 3 a lewis white american female 2 b lee black american male 2 a taylor asian american female 1 b carter asian american male 2 c edwards hispanic american male 2 e bailey white american male 2 b cooper white american male 2 a bill alaska native male 3 e cox asian american male 1 a perry hispanic american female 2 c flores alaska native female 2 b woods white american male 3 e cole asian american female 1 a what is the relative frequency of grade 3 employees?