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A student asked 7 random people that graduated last year their GPA and starting salary. The...

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Basic Math

A student asked 7 random people that graduated last year theirGPA and starting salary. The following table includes theresponses:

GPA

Starting Salary
($ in thousands)

1

2.05

$                    38

2

2.15

$                    40

3

2.53

$                   46

4

2.68

$                   43

5

3.12

$                    55

6

3.33

$                    55

7

3.65

$                    62

1. What is the coefficient of correlation?

a) -0.9857

b) -0.5854

c) 0.5854

d) 0.9857

2.  What is the slope of the regressionequation?

a) 5.85

b) 7.81

c) 16.78

d) 67.85

3.  What is the regressionequation?

a) GPA=7.81 + 14.57*$Starting Salary

b) GPA = 16.58+0.648*$Starting Salary

c) $Starting Salary=0.6048 + 16.58*GPA

d) $Starting Salary = 14.57 +7.81*GPA

3. Based on the data above what does the R2correlation coefficient indicate?

a) There is a positive linear relationship between GPA andstarting salary.

b) This is not a good model for this data.

c) This is a fairly strong model for this data.

d) Both a and c.

Answer & Explanation Solved by verified expert
3.7 Ratings (588 Votes)
Solution1 option d 098572    See Answer
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