? residuals have nonzero mean residuals have trend data have nonlinear association data are heteroscedastic regression looks fine regression is a poor summary of the data Select those attributes that can be inferred from the following residual plot (select all that apply). (Q1) regression went wrong Problem 1: interpret this residual plot 1,200- 1,000 - 800 - . . 600 400 200 - . ..... .. O 0 .. .. . -200 - -400 - -600 -.. -800 -1,000 - -10 -8 -6 -4 -2 0 N . 4 8 10 r: 0.53 X = 3.86 y = 957.55