

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





A. 
y = 5x  19,950 
B. 
y = 20x  19,950 


C. 
y = 10x  19,950 
D. 
y = 25x  19,950 


Hint 


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





A. 
y = 23x  21,000 
B. 
y = 2x  25 


C. 
y = x  576 
D. 
y = 12x  23,947 


Hint 


3. 
The math scores, x, and chemistry scores, y, for six students are given in the table. Use a graphing calculator to find the Pearson productmoment correlation. 





A. 
about 0.65 
B. 
about 0.74 


C. 
about 0.71 
D. 
about 0.68 


Hint 


4. 
What type of relationship does the scatter plot suggest? 





A. 
no linear relationship 


B. 
a linear relationship with a positive correlation 


C. 
a linear relationship with a negative correlation 


D. 
no correlation 


Hint 


5. 
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. 
93.25 
B. 
88.75 


C. 
72.5 
D. 
98.5 


Hint 

