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Given in the question that, An American roulette wheel contains $18$red numbers, $18$black numbers, and $2$green numbers. The following table shows the frequency with which the ball landed on each color in $200$trials.

We need to obtain a relative-frequency distribution.

The relative frequency can be calculated using the formula,

Relative Frequency $=\frac{\text{Frequency}}{\text{Number of Observations}}$

In the table below, the frequency distribution is presented.

Therefore, the relative frequency distribution of the given data sets is shown in the above table.

Given in the question that, An American roulette wheel contains $18$red numbers,$18$black numbers, and $2$green numbers. The following table shows the frequency with which the ball landed on each color in $200$trials.

We need to draw a Pie chart.

MINITAB has been used to create the pie chart.

The portion for each class in a pie chart is calculated by multiplying ${360}^0$by the corresponding relative frequencies.

The steps of drawing a pie chart are as follows:

• Choose Graph >Pie Chart.
• Select Chart values from table.
• Choose NUMBERunder Categorical variable.
• Select Frequency under Summary variables.
• Select Labels and choose Slide Labels tab.
• Check Category name and Percent under Label pie slices with.
• Click OK

Below figure shows the pie chart for the supplied data set.

Given in the question that, An American roulette wheel contains $18$red numbers,$18$black numbers, and $2$green numbers. The following table shows the frequency with which the ball landed on each color in $200$trials.

MINITAB has been used to create the bar chart.

The steps to making a bar chart are as follows:

• Choose Graph > Bar Chart.
• From Bars represent, choose Values from a table.
• Choose Simple, and click OK.
• In Categorical variables, enter one column of FREQUENCY.
• Choose Chart options
• Select Show Y as Percent.
• Click OK

The bar chart of the given data set is shown in figure below