Essential Question: How do you make and interpret scatter plots? Lesson 11.2 Scatter Plots Essential Question: How do you make and interpret scatter plots?

Before we start… Plot the points on a coordinate plane. 1,1 , 2,3 , 3,2 , 3,3 , 4,4 , 5,4 , 6,5 , 6,6 , 7,5.5 , 8,6 , 9,7 Analyze your graph. What happens to y as x increases?

What is a scatter plot? A graph of a collection of ordered pairs Describe the relationship between data

How do you make a scatter plot? Treat the data as ordered pairs. Plot the ordered pairs from the table as points. Label the horizontal and vertical axes.

Make a scatter plot. x -2 -1 1 2 y -3

Make a scatter plot. x -5 -4 -3 -2 -1 y 1 3 2 4

Make a scatter plot. x -3 -2 -1 1 2 y 4 5

NASA NASA’s Crawler Transporter is a large vehicle that moves the space shuttle and its launch platform to the launch pad. The table shows the amount of fuel, in gallons, that is used to travel different distances. Make a scatter plot of the data. Distance 1 2 3 4 5 6 Fuel used 126 252 378 504 630 756

How do you interpret scatter plots? Determine the relationship that exists between the two sets of data.

Positive Relationship y tends to increase as x increases.

Negative Relationship y tends to decrease as x increases

No Relationship The points show no obvious pattern.

Make a scatter plot and describe its relationship. x 1 2 3 4 y 6 12 15 20

Make a scatter plot and describe its relationship. x 5 10 15 20 25 y 24 18 22

The table shows the cost of buying breakfast cereal The table shows the cost of buying breakfast cereal. Make a scatter plot and describe its relationship. Number of ounces (x) 9.6 11.4 18.2 18.3 24 25.5 Cost per ounce (y) 0.44 0.33 0.25 0.22 0.17 0.16

How do you make and interpret scatter plots?

Ticket Out the Door Describe the relationship