Assessment 03 Scatter Plots and Trend Lines

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
• To make it look like you know what you are doing

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

• A
• B
• C
• D

Looking at the graph, what is the correlation between the x and y variables?

• y increases as x increases
• y is constant
• y decreases as x descreases
• y decreases as x increases

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

• A
• B
• C
• D

What is the type of correlation for the following scatter plot?

• Negative 
• None
• Positive 

Choose the graph with a trend line that best fits the data.

• graph 1

• graph 2

• graph 3

• graph 4

Which scatter plot show a positive relationship?

• Graph A
• Graph B
• Graph C
• Graph D

Which scatter plot shows a negative relationship?

• Graph A
• Graph B
• Graph C
• Graph D

The equation of the trend line
is  y= 1/2x +1. Use the equation to determine the amount of time it would take to bike 20 laps. 
*Look at the x and y axis first before starting the problem
   

• 38 minutes
• 11 minutes
• 41 minutes
• 10 minutes