Mathematics, 08.03.2021 20:00 alsk101
The following regression output was obtained from a study of architectural firms. The dependent variable is the total amount of fees in millions of dollars.
Predictor Coefficient SE Coefficient t p-value
Constant 7.267 3.000 2.422 0.010
x1 0.237 0.220 1.077 0.000
x2 â1.162 0.554 â2.097 0.028
x3 â0.130 0.408 â0.319 0.114
x4 0.538 0.371 1.450 0.001
x5 â0.038 0.030 â1.267 0.112
Analysis of Variance
Source DF SS MS F p-value
Regression 5 2,385.91 477.2 9.06 0.000
Residual Error 42 2,212.82 52.69
Total 47 4,598.73
x1 is the number of architects employed by the company.
x2 is the number of engineers employed by the company.
x3 is the number of years involved with health care projects.
x4 is the number of states in which the firm operates.
x5 is the percent of the firmâs work that is health careârelated.
Required:
a. Write out the regression equation.
b. How large is the sample? How many independent variables are there?
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The following regression output was obtained from a study of architectural firms. The dependent vari...
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