A large school district is reevaluating its teachers' salaries. They have decided to use regression analysis to uret mean cacci atas at COC school. The researcher uses years of experience to predict salary. The resulting equation was: Where Y=salary and X-years of experience. The raw data is given in the table below, Salary $54,000.00 $42,140.00 $36,195.00 $45,000.00 $58,950.00 $56,890.00 $53,250.00 $49,800.00 $35,820.00 $74,390.00 $28,900.00 $38,690.00 $78,070.00 $64,205.00 $20,000.00 Years of experience 13 9 7 9 14 13 14 11 8 22 5 8 23 18 2 a) Use Excel to estimate the regression equation (copy and paste your output). What is the coefficient on experience? b) What is the correlation coefficient? c) What is the coefficient of determination, and how do you interpret it? d) Discuss the overall significance of the model

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A large school district is reevaluating its teachers' salaries. They have decided to use regression analysis to predict mean teacher salaries at each elementary
school. The researcher uses years of experience to predict salary. The resulting equation was:
Where Y=salary and X=years of experience.
The raw data is given in the table below,
Salary
$54,000.00
$42,140.00
$36,195.00
$45,000.00
$58,950.00
$56,890.00
$53,250.00
$49,800.00
$35,820.00
$74,390,00
$28,900.00
$38,690.00
$78,070.00
$64,205.00
$20,000.00
Years of experience
13
9
7
9
14
13
14
11
8
22
5
8
23
18
2
a) Use Excel to estimate the regression equation (copy and paste your output). What is the coefficient on experience?
b) What is the correlation coefficient?
c) What is the coefficient of determination, and how do you interpret it?
d) Discuss the overall significance of the model
Transcribed Image Text:A large school district is reevaluating its teachers' salaries. They have decided to use regression analysis to predict mean teacher salaries at each elementary school. The researcher uses years of experience to predict salary. The resulting equation was: Where Y=salary and X=years of experience. The raw data is given in the table below, Salary $54,000.00 $42,140.00 $36,195.00 $45,000.00 $58,950.00 $56,890.00 $53,250.00 $49,800.00 $35,820.00 $74,390,00 $28,900.00 $38,690.00 $78,070.00 $64,205.00 $20,000.00 Years of experience 13 9 7 9 14 13 14 11 8 22 5 8 23 18 2 a) Use Excel to estimate the regression equation (copy and paste your output). What is the coefficient on experience? b) What is the correlation coefficient? c) What is the coefficient of determination, and how do you interpret it? d) Discuss the overall significance of the model
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