Understanding Pie Chart Angles

This video tutorial explains how to construct a circle graph, or pie chart, using both percentages and fractions. It begins with an introduction to circle graphs and the importance of understanding angles and using a protractor. The tutorial then provides step-by-step instructions for creating a circle graph from a table of percentages, followed by a similar process using fractions. The video emphasizes the proportional representation of data in circle graphs and concludes with a preview of the next video, which will cover constructing circle graphs from raw data.

What is the total degree measure of a circle?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

What tool is commonly used to measure angles when constructing a pie chart?

• Calculator

• Protractor

• Compass

• Ruler

If a website is visited by 46% of people, what percentage of the circle should it represent?

• 92%

• 46%

• 23%

• 12%

How do you calculate the degree measure for a category that represents 25% of the data?

• Multiply 25 by 360

• Divide 360 by 25

• Multiply 0.25 by 360

• Add 25 to 360

What is the degree measure for a category that represents 30% of the data?

• 108 degrees

• 72 degrees

• 90 degrees

• 54 degrees

In a pie chart, what does a sector represent?

• A random portion of the circle

• A proportional part of the data

• The entire circle

• None of the above

How do you find one-fifth of 360 degrees?

• Subtract 5 from 360

• Multiply 360 by 5

• Divide 360 by 5

• Add 5 to 360

What is the degree measure for a category that represents one-tenth of the data?

• 180 degrees

• 90 degrees

• 72 degrees

• 36 degrees

What is the degree measure for a category that represents half of the data?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

Why is it important to use a protractor when constructing a pie chart?

• To ensure the circle is perfectly round

• To calculate percentages

• To draw straight lines

• To measure the sectors accurately