Essay About Car Price Mean And B1

Stats Assignment
Stats Assignment 3Brandon HumberNovember 10, 2015a) Car Price mean = 14.1, Age of Car mean = 11.5Car Price Squared Standard DeviationAge of Car Squared Standard Deviation6 – 14.1 = -8.1 = 65.6120 – 11.5 = 8.5 = 72.259 – 14.1 = -5.1 = 26.0118 – 11.5 = 6.5 = 42.2512 – 14.1 = -2.1 = 4.4110 – 11.5 = 1.5 = 2.2515 – 14.1 = 0.9 = 0.818 – 11.5 = -3.5 = 12.2518 – 14.1 = 3.9 = 15.219 – 11.5 = -2.5 = 6.2525 – 14.1 = 10.9 = 118.814 – 11.5 = -7.5 = 56.25Total230.86191.53Standard Deviation15.1913.84b) Correlation = 119.62 x 3                  6-1 x 15.19 x 13.84=358.86  = 0.341051.15c) b1 = 0.34 x 15.19/13.84 = 0.37b0 = 11.5 + 0.34 (14.1) = 16.29d) y = 16.29 + 0.34 x 25 = 24.792. a) 70%b) Joint probability – adults under 50 and bank online.c) Bank OnlineDon’t Bank OnlineTotalsUnder 5025%15%40%Over 505%55%60%Totals30%70%100%d) 25%3. a) Midterm 1 Sum:  16805.45Midterm 2 Sum: 15248.18Midterm 3 Sum: 15832.8Final Exam Sum: 15754b)[pic 1]c) Correlation Coefficients:Midterm 1: 0.599533Midterm 2: 0.588109Midterm 3: 0.720151Line Equations:Midterm 1: y = 30.58087 + 0.59533 (Midterm 1 Mark), where the slope is 0.59533 multiplied by the mark on Midterm 1, and the intercept is 30.58087.