Q R1.2. - The Practice of Statistics for AP

Question

Movie ratings The movie rating system we use today was first established on November $1$, $1968$. Back then, the possible ratings were G, PG, R, and X. In 1984, the $PG-13$ rating was created. And in $1990, NC-17$ replaced the X rating. Here is a summary of the ratings assigned to movies between 1968 and $2000: 8\%$ rated G, $24\%$ rated PG, 10% rated $PG-13, 55\%$ rated R, and $3\%$ rated $NC-17.48$ Make an appropriate graph for displaying these data.

• Identify what makes some graphs deceptive.

Step-by-Step Solution

Answer

The graph is 

Step 1: Given information

Ratings assigned to movies between $1968$ and $2000$

Step 2: Concept

A statistical graph or chart is a visual representation of statistical data in graphical form.

Step 3: Explanation

The information is shown as a percentage. As is well known, pie charts are the most effective graph for representing data in percentages. As a result, build the pie chart using MINITAB as shown below.

To begin, enter all of the data into MINITAB. The following is a screenshot: 

Select the pie chart option from the drop-down menu after clicking on the Graph menu. A new dialogue box will appear after that. Select the option of charting data from a table first, then the type of ratings in categorical variables, and finally the percentage in the variable summary. The following is a screenshot: 

After that, select Labels from the drop-down menu. After that, a new dialogue box will appear. Choose the category name and % option after clicking on the slice labels tab. Below is an example of a screenshot.

Finally, click the OK button to return to the previous dialogue box, where you can then click the OK button to obtain the appropriate pie chart. The graph is as follows.