The output below shows a regression between the square footage and asking price for nine homes for sale in Orange County, California in February 2010. 1800 1600 1400 1200 SUMMARY OUTPUT 1000 800 ● Multiple R 600 R Square 400 Adjusted R Square 200 Standard Error Observations 1000 2000 3000 4000 5000 6000 ANOVA SS MS F Significance F Regression 924032.3089 924032.3 33.16433 0.000692097 Residual 195035.64 27862.23 Total 8 1119067.949 Intercept SqFt -48.51516784 0.281922541 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% 133.4610236 -0.36352 0.72695 -364.1003409 267.070005 -364.1003409 267.0700052 0.048954677 5.758848 0.000692 0.166163124 0.39768196 0.166163124 0.397681958 What is the regression equation? Oy - 48.52x +0.28 Oy= - - 48.52 +0.28x Oy = 48.52x +0.28 Oŷ 48.52 +0.28x Interpret the y- intercept of the line. O On average, each increase in 1 square foot of a house decreases its asking price by $48, 515. O On average, each increase in 1 square foot of a house increases its asking price by $282. Regression Statistics 0.908689165 0.825715999 0.800818284 166.9198439 9 df 1 7 0 0 ● ●
The output below shows a regression between the square footage and asking price for nine homes for sale in Orange County, California in February 2010. 1800 1600 1400 1200 SUMMARY OUTPUT 1000 800 ● Multiple R 600 R Square 400 Adjusted R Square 200 Standard Error Observations 1000 2000 3000 4000 5000 6000 ANOVA SS MS F Significance F Regression 924032.3089 924032.3 33.16433 0.000692097 Residual 195035.64 27862.23 Total 8 1119067.949 Intercept SqFt -48.51516784 0.281922541 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% 133.4610236 -0.36352 0.72695 -364.1003409 267.070005 -364.1003409 267.0700052 0.048954677 5.758848 0.000692 0.166163124 0.39768196 0.166163124 0.397681958 What is the regression equation? Oy - 48.52x +0.28 Oy= - - 48.52 +0.28x Oy = 48.52x +0.28 Oŷ 48.52 +0.28x Interpret the y- intercept of the line. O On average, each increase in 1 square foot of a house decreases its asking price by $48, 515. O On average, each increase in 1 square foot of a house increases its asking price by $282. Regression Statistics 0.908689165 0.825715999 0.800818284 166.9198439 9 df 1 7 0 0 ● ●
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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