1 votes 1 votes If $y=a+bx, \Sigma x =50, \Sigma y=80, \Sigma xy=1030, \Sigma x^2 =750$ and $n=10$, then a=1.7, b=1.52 a=1.7, b=1.26 a=1.8, b=1.26 a=1.8, b=1.52 Quantitative Aptitude quantitative-aptitude + – Don't you worry asked Jun 22, 2016 retagged Jun 23, 2017 by Arjun Don't you worry 1.4k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
2 votes 2 votes Correct me If i'm Wrong.......its a bit logic i don't know whether answer is correct or not B) a =1.7 and b = 1.26 HOW: y = a + bx ∑y =∑(a+bx) 80 =10*a + b*∑x 80 = 10*a + b*50 8 = a+b*5 now use options to verify your answer Kashyap Avinash answered Jun 26, 2016 Kashyap Avinash comment Share Follow See all 0 reply Please log in or register to add a comment.