Question: SURVIVAL ANALYSIS Techniques for Censored and Truncated Data Second Edition John P. Klein Melvin L. Moeschberger Exercise 11.6 (a) For the data on survival times

SURVIVAL ANALYSIS Techniques for Censored and Truncated Data Second Edition John P. Klein Melvin L. Moeschberger

Exercise 11.6

(a) For the data on survival times of patients with an aneuploid or diploid DNA tumor profile in Exercise 4 determine which, if any, observations are outliers by making an appropriate deviance residual plot. (b) Find the three points that have the greatest influence on the estimate of the regression effect by constructing a plot of the adjusted score residuals. Explain why these three points are so influential in light of your fitted regression model.

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