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### Course: High school statistics>Unit 3

Lesson 1: Two-way tables introduction

# 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.
• 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?
• Yeah, the two-way tables are used in many different subjects. In my 6th grade social studies, we used two-way tables to describe differences between two groups of people.
• would a punnet square be a type of 2 way frequency table?
• Yes, I even use two-way tables in other classes such as Social Studies to compare and contrast.
• 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.