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## AP®︎/College Statistics

### Course: AP®︎/College Statistics>Unit 1

Lesson 3: Representing two categorical variables

# Two-way frequency tables and Venn diagrams

Sometimes data belongs to more than one category. For example, candies might have chocolate, coconut, both, or neither. We can use Venn diagrams and two-way tables. Venn diagrams show sets and their overlaps. Two-way tables organize data in rows and columns. Both methods help show relationships between categories.

## Want to join the conversation?

• Are Venn diagrams, by convention, limited to two spheres with intersecting areas?
• In theory, you can represent as many overlapping categories as you like. But after 3 or 4, it becomes a waste of time because the Venn diagram gets confusing. And the whole point of visualizing data is to make it clearer, not more confusing. :-)
• This video didn't help me what so ever
• It just explains the utmost basics of Venn Diagrams and Frequency Tables. If you want more, watch more advanced videos.
• why is this important in math
• It is a key fundemental that helps you organise your data visually so that you are able to see the relationships between a set of items. It can also help you identify similarities and differences.
• can you do a video about problem solving about Venn diagrams
• Are those the only two ways you can do it?
• No, of course but those are the most common ones.
• if you stab cereal are you a cereal killer 🤔
• While the act of stabbing cereal may sound like a play on words with "serial killer," it is important to remember that words have multiple meanings and interpretations.

In this case, stabbing cereal would simply mean piercing or cutting it with a utensil, which is a common action when eating cereal. Therefore, it would not be accurate to say that someone who stabs cereal is a "cereal killer."

It's important to be mindful of the words we use and their meanings, as they can have different connotations and implications in different contexts.
• What is the pointof portraying data in different ways when one is sufficient.
• There are other people who might find for e.g. the Venn diagram hard to understand than the two way table. The reverse can happen with other people too. For this reason, there are two ways to portray data.
• The two way table seems to be the same way that I learned about Mother/Father to offspring trait in my science class. Am I right?