Venn Diagram ExampleSurvey of 50 people who have a pet. 24 people have adog. 18 people have a cat. 12 people have fish. 4people have fish and a cat. 1 person has a fish and adog. 3 people have a dog and a cat. 5 people have afish, a cat and a dog. How many people don’t have anyof these pets? Cat Dog ___ ___ ___ ___ ___ ___ ___ Fish
Line GraphConsists ofpaired values graphed as points on aplane defined by an x- and y-axis;line segments connecting the graphedpoints (much like a dot-to-dot).Works well whenthe data is paired (bi-variate);the data is continuous.
Line Graph Example 75 74 73 Johns Weight in Kilograms 72 71 70 69 68 67 66 65 1991 1992 1993 1994 1995 YearJohn weighed 68 kg in 1991, 70 kg in 1992, 74 kg in1993, 74 kg in 1994, and 73 kg in 1995.
Advantages of Line GraphsA line graph is a way to summarize how twopieces of information are related and how theyvary depending on one another. Disadvantages of Line GraphsChanging the scale of either axes candramatically change the visual impression of thegraph.