6. 300- Real estate is typically reassessed annually for property tax purposes. This assessed value, however, is not necessarily the same as the fair market value of the property. An SRS of 30 properties recently sold in a midwestern city was taken. The scatter plot below show the actual sales prices and the assessed values of the 30 properties. Both variables are measured in 250- 200- thousands of dollars. 150- Let y; and x; be respectively the sales price and the assessed value of the ith property. We use R to fit the regression model 100– Yi = Bo + B1Xi + Ei, Ei ~ i.i.d. N(0, ơ). 100 150 200 250 300 and yield the output below. Assessed Value ($1000) Call: Mean SD 1m(formula = Sales.Price ~ Assessed.Value) Assessed Value 184.13 45.43 Sales Price 195.84 47.18 Coefficients: Estimate Std. Error t value Pr(>|t]) (Intercept) 21.49923 15.27936 1.407 0.17 Assessed. Value 0.94682 0.08064 11.741 2.49e-12 *** --- Residual standard error: 19.73 on 28 degrees of freedom Multiple R-squared: 0.8312, F-statistic: 137.9 on 1 and 28 DF, Adjusted R-squared: 0.8251 p-value: 2.488e-12 What is the value of the slope of the regression line predicting the actual sales price from the assessed value? Interpret the slope of the regression line in the context of the data. Sales Price ($1000)
6. 300- Real estate is typically reassessed annually for property tax purposes. This assessed value, however, is not necessarily the same as the fair market value of the property. An SRS of 30 properties recently sold in a midwestern city was taken. The scatter plot below show the actual sales prices and the assessed values of the 30 properties. Both variables are measured in 250- 200- thousands of dollars. 150- Let y; and x; be respectively the sales price and the assessed value of the ith property. We use R to fit the regression model 100– Yi = Bo + B1Xi + Ei, Ei ~ i.i.d. N(0, ơ). 100 150 200 250 300 and yield the output below. Assessed Value ($1000) Call: Mean SD 1m(formula = Sales.Price ~ Assessed.Value) Assessed Value 184.13 45.43 Sales Price 195.84 47.18 Coefficients: Estimate Std. Error t value Pr(>|t]) (Intercept) 21.49923 15.27936 1.407 0.17 Assessed. Value 0.94682 0.08064 11.741 2.49e-12 *** --- Residual standard error: 19.73 on 28 degrees of freedom Multiple R-squared: 0.8312, F-statistic: 137.9 on 1 and 28 DF, Adjusted R-squared: 0.8251 p-value: 2.488e-12 What is the value of the slope of the regression line predicting the actual sales price from the assessed value? Interpret the slope of the regression line in the context of the data. Sales Price ($1000)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.2: Representing Data
Problem 11PPS
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