A student surveyed the favorite dipping sauces of the 70 people in his class. He wants to use the data in a circle graph:

\begin{tabular}{|c|c|}
\hline Favorite Dipping Sauce & Number of Students \\
\hline Ranch & 14 \\
\hline Barbecue & 20 \\
\hline Honey Mustard & 10 \\
\hline Sweet and Sour & 18 \\
\hline Ketchup & 8 \\
\hline
\end{tabular}

What angle should the wedge for ranch have?

A. [tex]$20^{\circ}$[/tex]

B. [tex]$14^{\circ}$[/tex]

C. [tex]$72^{\circ}$[/tex]

D. [tex]$60^{\circ}$[/tex]



Answer :

To determine the angle for the Ranch wedge in the circle graph, follow these steps:

1. Find the total number of students surveyed: There are 70 students surveyed in total.

2. Determine the number of students who chose Ranch: According to the given data, 14 students chose Ranch as their favorite dipping sauce.

3. Calculate the fraction of students who chose Ranch: This fraction is the number of students who chose Ranch divided by the total number of students surveyed.

[tex]\[ \text{Fraction of students who chose Ranch} = \frac{\text{Number of Ranch students}}{\text{Total number of students}} = \frac{14}{70} = 0.2 \][/tex]

4. Calculate the angle for the Ranch wedge in the circle graph: The total degrees in a circle is 360 degrees. To find the angle for the Ranch wedge, multiply the fraction from the previous step by 360 degrees.

[tex]\[ \text{Angle for Ranch wedge} = \text{Fraction of students who chose Ranch} \times 360^{\circ} = 0.2 \times 360^{\circ} = 72^{\circ} \][/tex]

Therefore, the angle for the Ranch wedge should be \(72^{\circ}\).

So, the correct answer is:
C. [tex]\(72^{\circ}\)[/tex]