摘要
Iafluence function of a statistic describes the effect of a small perturbation of the data on this statistic. This paper studies the influence function of squared correlation coefficient R^2 of k sets of variables defined by Y. Zhang and X. Zhu and gives the variance and its estimation of the squared sample correlation coefficient Rn^2. Finally, the results obtained are applied to assessing the infiuence of individual observation with the aid of an example.
