91Ó°ÊÓ

The data is given as,

The relative frequency can be calculated using the formula,

$\text{Relative Frequency}=\frac{\text{Frequency}}{\text{NumberofObservations}}$

In the table below, the frequency distribution is presented.

$\begin{array}{|ccl|}\hline \text{View}& \text{Frequency}& \text{Relative Frequency}\\ \text{Liberal}& 147& \frac{147}{500}=0.294\\ \text{Moderate}& 237& \frac{237}{500}=0.474\\ \text{Conservative}& 116& \frac{116}{500}=0.232\\ \text{Total}& 500& 1\\ \hline\end{array}$

The data is given as,

MINITAB has been used to create the pie chart.

The portion for each class in a pie chart is calculated by multiplying ${360}^{∘}$by the appropriate relative frequencies.

The steps of drawing a pie chart are as follows:

- Select Graph > Pie Chart from the menu bar.

- Choose values for the chart from the table.

- Select Viewunder Categorical Variable from the drop-down menu.

- Under Summary variables, choose Frequency.

- Go to the Labels tab and then to the Slide Labels tab.

- Under Label pie pieces with, double-check Category name and Percentage.

- Select OK.

Figure 1 shows the pie chart for the supplied data set.

The data is given as,

The construction of the bar chart is depicted in the diagram below. MINITAB has been used to create the bar chart. The steps to making a bar chart are as follows:

- Select Graph > Bar Chart from the drop-down menu.

- Select Values from a table from the Bars represent section.

- Click OK after selecting Simple.

- Add one column of FREQUENCY to Categorical variables.

- Select options for the chart

- Choose Show $y$as Percentage from the drop-down menu.

- Select OK.

The supplied data set's bar chart is depicted in the picture below.