The relative frequency can be calculated using the formula:
[tex]relative\text{ frequency = }\frac{frequency\text{ of the set}}{Total\text{ frequency}}[/tex]
The completed table can be shown below:
This is a sample calculation of the relative frequency:
[tex]\begin{gathered} rel\text{ freq = }\frac{2}{21}\text{ }\times\text{ 100 \%} \\ =\text{ 9.52\%} \end{gathered}[/tex]
(b) The class 121-160 list the data values that are in the third class of your frequency distribution table
(c) The data value 99 falls in the 81-120 class
