 Self check
Use the regression equation to predict the value of y for x = 0.2. Assume that the variables x and y have a significant correlation.
A. 
1.135 

B. 
0.381 

C. 
2.037 

D. 
1.733 
Provide an appropriate response.
Match the regression equation with the appropriate graph. (Note that the x and yaxes are broken.)
= 1.72x + 84.99
A. 


B. 


C. 


D. 

Provide an appropriate response.
Find the equation of the regression line for the given data.
A. 
= 1.885x + 0.758 

B. 
= 0.758x  1.885 

C. 
= 0.758x + 1.885 

D. 
= 1.885x  0.758 
Provide an appropriate response.
Calculate the correlation coefficient, r, for the data below.
A. 
0.819 

B. 
0.881 

C. 
0.792 

D. 
0.990 
Provide an appropriate response.
Given the supply of a commodity, x, and the price of a commodity, y, would you expect a positive correlation, a negative correlation, or no correlation?
A. 
positive correlation 

B. 
no correlation 

C. 
negative correlation 
HW new
Provide an appropriate response.Match the regression equation with the appropriate graph. (Note that the x and yaxes are broken.)
y= 1.1x + 52.3
Provide an appropriate response.
The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. What is the best predicted value for y given Assume that the variables x and y have a significant correlation.
A. 
71 

B. 
72 

C. 
69 

D. 
70 
Provide an appropriate response.
Given the size of a human's brain, x, and their score on an IQ test, y, would you expect a positive correlation, a negative correlation, or no correlation?
A. 
negative correlation 

B. 
positive correlation 

C. 
no correlation 




Provide an appropriate response.
Use the regression equation to predict the value of y for x = 0.2. Assume that the variables x and yhave a significant correlation

A. 
1.135 


B. 
1.733 


C. 
0.381 


D. 
2.037 
Provide an appropriate response
Construct a scatter plot for the given data. Determine whether there is a positive linear correlation, negative linear correlation, or no linear correlation
QProvide an appropriate response.
Find the equation of the regression line for the given data.
A. 
= 0.552x + 2.097 

B. 
= 0.522x  2.097 

C. 
= 2.097x + 0.552 

D. 
= 2.097x  0.552 
Question Provide an appropriate response.
Calculate the correlation coefficient, r, for the data below
A. 
0.819 

B. 
0.990 

C. 
0.881 

D. 
0.792 
Provide an appropriate response.
The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Find the equation of the regression line for the given data.
A. 
= 5.044x + 56.113 

B. 
= 56.113x  5.044 

C. 
= 56.113x  5.044 

D. 
= 5.044x + 56.113 
Question Provide an appropriate response.
Given the supply of a commodity, x, and the price of a commodity, y, would you expect a positive correlation, a negative correlation, or no correlation?
A. 
negative correlation 

B. 
positive correlation 

C. 
no correlation 
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