

1. 
Which is the best prediction equation for the data? 





A. 
y = 10x  19,950 
B. 
y = 5x  19,950 


C. 
y = 20x  19,950 
D. 
y = 25x  19,950 


Hint 


2. 
Use a graphing calculator to find the equation of the regression line. 





A. 
y = x  576 
B. 
y = 12x  23,947 


C. 
y = 2x  25 
D. 
y = 23x  21,000 


Hint 


3. 
What type of relationship does the scatter plot suggest? 





A. 
no linear relationship 


B. 
no correlation 


C. 
a linear relationship with a positive correlation 


D. 
a linear relationship with a negative correlation 


Hint 


4. 
Ilene analyzed her test scores and determined the equation of the bestfit line was y = 4.25x + 72. Predict her score for the 5th test. 


A. 
98.5 
B. 
93.25 


C. 
72.5 
D. 
88.75 


Hint 


5. 
Graph the data on a scatter plot. 





A. 

B. 



C. 

D. 



Hint 

