Question

A frequency 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?

Answer 1

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
Answer:  0.013 

Class b:
1515/3454 = 0.4386
Answer: 0.439

Class c:
1818/3454 = 0.5263
Answer: 0.526

Class d:
66/3454 = 0.0191
Answer: 0.019

Class f:
11/3454 = 0.0032
Answer: 0.003