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3. Find the linear correlation coefficient, r. Round to four decimal places. 4. Find R2 and interpret it in context. Round to the hundredth percent.

3. Find the linear correlation coefficient, r. Round to four decimal places. 4. Find R2 and interpret it in context. Round to the hundredth percent.

MATLAB: An Introduction with Applications
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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3. Find the linear correlation coefficient, r. Round to four decimal places. 4. Find R2 and interpret it in context. Round to the hundredth percent.
Transcribed Image Text:3. Find the linear correlation coefficient, r. Round to four decimal places. 4. Find R2 and interpret it in context. Round to the hundredth percent.
footage<- c(1561,1818,1421,1488,1356,1430,1881,1253,1300,1500,1806, 1777,1995) price<- c(425,489,379,499,299,380,560,429,524.9,429.9,580,459,665) xyplot(price-footage, Asking Price($000) xlab="square Footage", ylab="Asking Price($000)", type=c("p","r")) 600 500 400 300 T 1400 1600 square Footage cor(price,footage) ## [1] 0.7088847 pricemodel<-lm(price-footage) msummary(pricemodel) 1800 2000 ## Estimate Std. Error t value Pr(>|t|) ## (Intercept) 21.14411 136.31449 0.155 0.87954 ## footage 0.28388 0.08516 3.333 0.00667 ** ## ## Residual standard error: 71.64 on 11 degrees of freedom ## Multiple R-squared: 0.5025, Adjusted R-squared: 0.4573 ## F-statistic: 11.11 on 1 and 11 DF, p-value: 0.006671
Transcribed Image Text:footage<- c(1561,1818,1421,1488,1356,1430,1881,1253,1300,1500,1806, 1777,1995) price<- c(425,489,379,499,299,380,560,429,524.9,429.9,580,459,665) xyplot(price-footage, Asking Price($000) xlab="square Footage", ylab="Asking Price($000)", type=c("p","r")) 600 500 400 300 T 1400 1600 square Footage cor(price,footage) ## [1] 0.7088847 pricemodel<-lm(price-footage) msummary(pricemodel) 1800 2000 ## Estimate Std. Error t value Pr(>|t|) ## (Intercept) 21.14411 136.31449 0.155 0.87954 ## footage 0.28388 0.08516 3.333 0.00667 ** ## ## Residual standard error: 71.64 on 11 degrees of freedom ## Multiple R-squared: 0.5025, Adjusted R-squared: 0.4573 ## F-statistic: 11.11 on 1 and 11 DF, p-value: 0.006671
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