Problem 2 ? 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). (Q2) regression went wrong Problem 2: interpret this residual plot 800 600 - 400 200 0 - -200 -400 -600 -800 + -10 -8 -6 -4 -2 0 2 4 6 10