We can also work out Probability or Odds from our Venn Diagram.įor example we have found that 31 people out of 70 like Rock Music. The Total Rock People is: 16 + 2 + 8 + 5 = 31 people. If we want to find the total number of people who like “Rock” music, then we add up all of the numbers in the “Rock” circle, including the areas where “Rock” overlaps with the other circles. This “E = Everything value” is also called “The Universal Set” of everything in the universe of our diagram. To find out the total number of people surveyed, (or the E = Everything value), we add up all the numbers in the diagram. Image Source: Passy’s World of Mathematics The results were placed into the following three circle Venn Diagram. We then look at some word problems.Ī Music Survey was carried out to find out what types of music a group of people liked. In this lesson we first look at how to read three circle diagrams. Three circle Venn Diagrams are a step up in complexity from two circle diagrams. Image Source: istockphoto Purchased by Passy’s World
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