I have a big test next week and am trying to take these practice tests to find out where I am weak. I am not getting these correct. I hope someone on here understand this.

Question 4 2 pts After running your analysis in R, you get the following plot. sb-sp st-sb-sp Estti Statistic: adjr 0.40 0.45 0.50 0.55 0.60 0.65 sp: spkts 1.5 2.0 2.5 3.0 Subset Size Indicate which of the following variables is included as a predictor in all three regression models. O IP O sbytes O stti O status spkts O sloss Question 5 2 pts Based on the plot, which of the following variables would make the best single- variable model that predicts your outcome? (Select all that apply) sb-SF st-sb-sp Statistic adjr 040 0.45 0.50 0.55 0.60 0.65 T 1.5 2.0 2.5 3.0 Subset Size O sbytes IP sttl status O spkts sloss Question 6 2 pts Based on the plot, which of the following two-variable models has the highest Adjusted R2 when predicting the number of packets lost? sb-sp st-sb-sp Statistic: adjr2 sbytes 040 045 0.50 0.55 0.60 0.65 p: spits 2.0 2.5 30 Subset Size O sttl and IP O sttl and spkts O sbytes and spkts O sttl and sbytes Question 7 2 pts Based on the plot, which of the following variables would make the best three- variable model that predicts your outcome? sb-sp st-sb-sp Statistic: adj 040 0.45 0.50 055 0.60 0.65 sb. s 1.5 2.0 2.5 3.0 Subset Size O IP stti sbytes O status O spkts Question 8 2 pts Complete the spaces below with the syntax you would use to create the following plot