What is a scatterplot? What types of trends (correlation) does a scatterplot show? A graph that can show trends of information. Made with ordered pairs scattered on a coordinate plane. Positive, Negative, No correlation, undefined correlation
Positive: Moving from left to right on the graph, the points move upward. As your domain increases, your range also increases. Examples: The longer you drive, the more miles you put on your car. The more you talk on your cell phone, the higher your bill.
Negative: Moving from left to right, the points move downward. As the domain increases, the range decreases. Examples: The longer the candle burns, the shorter the height. The older a car is, the less it is in value.
No correlation: There is no pattern on the graph. No line of best fit. Examples: Your grade in class and how many people are in your family. The temperature outside and how much you spend on groceries.
Undefined Correlation: A vertical or horizontal line on the graph. Examples: Shoes size and age. Age of kids in a 1 st grade class and their height.