Consider the following residual plots. (i) 12- (ii) 3- 8- Residual 1- Residual 0 12 3 -1- 4. 56 4- -3- 123 4 56 (a) Sketch a graph for each of the residual plots. (b) What do the residual plots tell you about the line of best fit? (c) Describe the residual plot for a perfect line of best fit. (d) Based on your responses in parts (a) and (b), describe the general characteristics of a residual plot for a line of best fit that accurately models the data.

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