Two remarks on the multidimensional $\chi^2$ statistic
Diskretnaya Matematika, Tome 11 (1999) no. 4, pp. 145-151.

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We consider a sequence of polynomial trials with $N$ outcomes and construct the multivariate statistic $\chi^2$ with the use of samples of growing sizes $n_1,\ldots,n_r$, $1\le n_1\ldots$, $r\ge 2$, such that each subsequent sample contains the previous one. We assume that $N$ is fixed, $n_1\to\infty$, and $n_i/n_{i+1}\to\rho_i^2$, $0\rho_i1$, $i=1,\ldots,r-1$.For fixed (not close) alternatives to a simple hypothesis tested, we establish the weak convergence of the distribution of the vector statistic $\chi^2$, whose components are appropriately centered and normalized, to multivariate normal and chi-square laws. In the case of convergence to the normal law, the components of the limiting normal random vector form a non-homogeneous Markov chain; the densities of transition probabilities of this chain are found.This research was supported by the Russian Fiundation for Basic Research, grants 96–01–00531, 96–15–96092.
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     title = {Two remarks on the multidimensional $\chi^2$ statistic},
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     year = {1999},
     language = {ru},
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B. I. Selivanov; V. P. Chistyakov. Two remarks on the multidimensional $\chi^2$ statistic. Diskretnaya Matematika, Tome 11 (1999) no. 4, pp. 145-151. http://geodesic.mathdoc.fr/item/DM_1999_11_4_a12/