=+13.2 time to exhaustion and y 5 20-km ski time. The x values and corresponding standardized residuals from a simple linear regression are as follows.

x 7.7 8.4 8.7 9.0 9.6 9.6 St. resid. 0.10 1.13 21.74 0.44 20.96 1.44 x 10.0 10.2 10.4 11.0 11.7 St. resid. 21.18 20.19 1.16 20.27 0.12 Construct a standardized residual plot. Does the plot exhibit any unusual features?