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stephanieanaya7
14.02.2020 •
Mathematics
A regression analysis was done of residential property values in a portion of a city. The dependent variable is Sale Price (Y) and the independent variable is Square Footage (X). Data for 157 properties were used in the regression. The results are listed below.
Predicted Y = 96,600 + 22.5(X) R-square = .77
What is the predicted value of Sale Price if the property has 2500 square feet?
A. $56,250.00
B. $152,850.00
C. $96,622.50
D. $96,600.00
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Ответ:
So then the correct option for this case would be:
B. $152,850.00
Step-by-step explanation:
They adjust a linear model
using the least squares method
For this case we assume that they calculate the slope with the following formula:
Where:
And we can find the intercept using this:
After apply the method they obtain the following regression equation:
Where Y represent the sale price and X the square footage.
And we want to estimate the predicted value of Sale price if the property has a 2500 square footage.
So for this case we just need to replace into our original equation the value of X = 2500 and we got:
So then the correct option for this case would be:
B. $152,850.00
Ответ:
H=2 i just took the test
Step-by-step explanation: