Use the data given below to answer the following question.

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?

Select one:

a. 0.55

b. 0.20

c. 5

d. 4