Scatter Plot & Correlation Coefficient

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

• A
• B
• C
• D

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 12 absences should get approximately what score on the final exam?

• 60

• 92

• 70

• 76

The number of siblings you have and your weight. 

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

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

If Gold's Gym paid $250 for each TV, how many did they buy?

• 35
• 30
• 45
• 20

The table shows the lengths and corresponding ideal weights of sand sharks. Which r-value is more accurate for the data?

• r = 0.99

• r = -0.90

• r = 0.09

• r = -0.099

The table shows the attendance at a flag football game for the first 8 games of the season. What is the correlation of the data?

• Strong Positive

• Strong negative

• Weak Postive

• Weak Negative

• No correlation

Determine the line of best fit for the data shown.

Describe a correlation with a coefficient of r=0.3

• Strong positive

• Weak positive

• Strong negative

• Weak negative

The following scatter plot shows the weights and lengths of some dinosaurs.  Which statement accurately describes the information?

• The information shows a positive correlation.  The weight of a dinosaur tends to increase according to its length.
• The information shows a negative correlation.  the weight of a dinosaur tends to decrease according to its length.
• The information shows no correlation.  The weight and length vary according to the type of dinosaur.
• The information shows no correlation.  The relationship between the weight and length of a dinosaur is uncertain.