Scatter plots and trend lines

Level 1: Determine the type of correlation.

• Positive

• Negative

• No Correlation

What type of correlation (association)?
The outside temperature and the amount of layers you wear. 

• Positive correlation
• Negative correlation
• No correlation
• All of the above

What is a line of best fit used for?

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

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

• about 58

• about 92

• about 100

• about 76

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

Which of the following would be the most accurate equation for the scatter plot?

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 25x + 7

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

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive