Call: lm (formula = priceM2 - age + distMet + latitude + longitude, data = RealEstate) Residuals: Min 10 Median 30 Маx -33.069 -5.343 -1.050 4.410 71.305 “圖" Coefficients: t value -0.563 Estimate Std. Error Pr (>|t|) 0.573 (Intercept) -3.650e+03 6.478e+03 -2.526e-01 4.060e-02 Age distMet -6.221 1.22e-09*** 9.88e-16*** 1.13e-08 *** -5.875e-03 7.027e-04 -8.361 latitude 2.714e+02 4.655e+01 5.830 longitude -2.532e+01 5.120e+01 -0.495 0.621 --- Signif. codes: 0 ****' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 9.355 on 409 degrees of freedom Multiple R-squared: 0.5319, Adjusted R-squared: 0.5273 F-statistic: 116.2 on 4 and 409 DF, p-value: < 2.2e-16 f) A new variable is added to the model which is longitude of the residence. Summary output is given above. What do you think of the new model? Do you think this variable should be added to the model, why? (15p)
Call: lm (formula = priceM2 - age + distMet + latitude + longitude, data = RealEstate) Residuals: Min 10 Median 30 Маx -33.069 -5.343 -1.050 4.410 71.305 “圖" Coefficients: t value -0.563 Estimate Std. Error Pr (>|t|) 0.573 (Intercept) -3.650e+03 6.478e+03 -2.526e-01 4.060e-02 Age distMet -6.221 1.22e-09*** 9.88e-16*** 1.13e-08 *** -5.875e-03 7.027e-04 -8.361 latitude 2.714e+02 4.655e+01 5.830 longitude -2.532e+01 5.120e+01 -0.495 0.621 --- Signif. codes: 0 ****' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 9.355 on 409 degrees of freedom Multiple R-squared: 0.5319, Adjusted R-squared: 0.5273 F-statistic: 116.2 on 4 and 409 DF, p-value: < 2.2e-16 f) A new variable is added to the model which is longitude of the residence. Summary output is given above. What do you think of the new model? Do you think this variable should be added to the model, why? (15p)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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please elaborate and give example also. thank you.
Transcribed Image Text:Call:
Im (formula = priceM2
- age + distMet + latitude + longitude,
data = RealEstate)
Residuals:
Min
10
Median
30
Маx
-33.069
-5.343
-1.050
4.410
71.305
Coefficients:
t value
-0.563
Estimate
Std. Error
Pr (>|t|)
(Intercept)
-3.650e+03
6.478e+03
0.573
Age
-2.526e-01
4.060e-02
-6.221
1.22e-09 ***
distMet
-5.875e-03
7.027e-04
-8.361
9.88e-16 ***
4.655e+01
5.120e+01
latitude
2.714e+02
5.830
1.13e-08 ***
longitude
-2.532e+01
-0.495
0.621
---
Signif. codes:
O '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Residual standard error: 9.355 on 409 degrees of freedom
Multiple R-squared:
F-statistic: 116.2 on 4 and 409 DF, p-value: < 2.2e-16
0.5319, Adjusted R-squared: 0.5273
f) A new variable is added to the model which is longitude of the residence. Summary output is given
above. What do you think of the new model? Do you think this variable should be added to the model,
why? (15p)
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