Question

(Same as in the Previous Question) Fifteen houses rented recently in a certain county provided the data: size of the house x (in sq. ft.) and the monthly renty (in thousands of dollars). The sample data are summarized by the following information: n = 15. Ex= 16,560, y = 21.685, Exy = 28,474.85, x2 = 22,557,866, XY2 = 36.93, 650 sxs 2,400 The following sums were also computed: SSxy= 4,534.61, SS.-= 4,275,626, SSW = 5.5807 1. The sum of the squared errors SSE for the least squares regression line is: [Select) [ Select] 2. 35.38 which of the following is the coefficient of 10.39 0.77 0.06 3. 0.24 Frect interpretation based on the coefficient of determination in the previous problem? (Select]

Answer 1

Given SSxy = 4534.61, SSxx = 4275626 SSyy = 5.5807 1) SST=SSyy = 5.5807 ssy 4534.612 SSR - 4.8093 SSxx 4275626 SSE=SST-SSR=5.5807-4.8093=0.7714=0.77 3rd option is correct SSE 0.7714 = 0.8618 = 0.86 2) Coefficient of determination R2 = 1 2nd option is correct SST 5.5807 3) Explained variation is 86% 86% of the variability in the monthly rent of the house is explained by its size 2nd option is correct