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Question

1. If Variable 3 increases by 10 units, according to the table what would happen to the prediction?

 

a. The DEALER COST will be about 1731.4.  

b. Since Standard Error is 7532 the DEALER COST will be between 1731.4 - 7532 and 1731.4 +7532.  

c. No conclusion because R-squared is too large.  

d. DEALER COST will increase by 1731.4.  

e. None of these.  

 

2. If all 4 variables increase by 1 unit, according to the table what would happen to the prediction? (numbers are rounded)

 

a. The DEALER COST would be approximately 597.97 units.  

b. The DEALER COST would increase by approximately 597.97 units.  

c. The DEALER COST would increase by approximately 806.97 units.  

d. The DEALER COST would be approximately 806.97 units.  

e. None of the above.  

 

3. Which two numbers are designed to describe the center of the variable, DEALER COST? (Note: numbers are rounded.)

 

a. 27385.8 & 23792  

b. 23792 & 14579  

c. 27385.8 & 7532  

d. 27385.8 & 0.737  

e. 23792 & 208.9  

 

4. Which number should be used in order to answer the question: Is Variable 2 related to DEALER COST?

 

a. 3358.4  

b. 7532  

c. 0.737  

d. 0.0006  

e. None of these  

 

5. Once a prediction is made, we often provide a range where we believe the true value will lie. What number is used to construct this range?

 

a. 3358.4  

b. 7532  

c. 0.737  

d. 0.0006  

e. None of these  

 

6. Which number describes the variation of the variable, DEALER COST, the best?

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