Scatter Plots and Trend Lines

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases

Based on the data, about how many male math teachers will there be in 2016?

• 35

• 46

• 52

• 70

Based on this scatter plot, a student with 6 absences should get approximately what score on the final exam? 

• ≅ 58
• ≅ 92
• ≅ 100
• ≅ 76

As the age of the car increases, its value decreases. Which scatter plot represents this relationship?

• A
• B
• C
• D

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee
• lose 5 hours of sleep for 7 cups of coffee
• lose 7 cups of coffee for 5 hours of sleep
• lose 5 cups of coffee for 7 hours of sleep

What is the equation for the line that passes through the points (4,2) and (0,6)?

• y -4 =-( x -2)

• y -2 = -(x -4)

• y = 2

• y = x + 6

What is a scatter plot?

• A graph that shows the relationship of two data sets.
• A graph drawn using rectangular bars to show how large each value is.
• A graph that shows information that is connected in some way.
• A graph that shows data changing over time.

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points