Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 44, 1515, 1818, 66, and 11 respectively. what are the relative frequencies of the five classes?

Refer to the histogram shown below.

Total frequency = 44 + 1515 + 1818 + 66 + 11 = 3454.

Calculate relative frequencies, to the nearest thousandth.
Class a:
44/3454 = 0.0127
 0.013 

Class b:
1515/3454 = 0.4386
0.439

Class c:
1818/3454 = 0.5263
0.526

Class d:
66/3454 = 0.0191
0.019

Class f:
11/3454 = 0.0032
0.003