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- W2101809622 abstract "In this paper,we present a test of independence between the response variable, which can be discrete or continuous, and a continuous covariate after adjusting for heteroscedastic treatment effects. The method involves first augmenting each pair of the data for all treatments with a fixed number of nearest neighbours as pseudo-replicates. Then a test statistic is constructed by taking the difference of two quadratic forms. The statistic is equivalent to the average lagged correlations between the response and nearest neighbour local estimates of the conditional mean of response given the covariate for each treatment group. This approach effectively eliminates the need to estimate the nonlinear regression function. The asymptotic distribution of the proposed test statistic is obtained under the null and local alternatives. Although using a fixed number of nearest neighbours pose significant difficulty in the inference compared to that allowing the number of nearest neighbours to go to infinity, the parametric standardizing rate for our test statistics is obtained. Numerical studies show that the new test procedure has robust power to detect nonlinear dependency inthe presence of outliers that might result from highly skewed distributions." @default.
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- W2101809622 date "2010-08-31" @default.
- W2101809622 modified "2023-09-25" @default.
- W2101809622 title "A distribution free test to detect general dependence between a response variable and a covariate in the presence of heteroscedastic treatment effects" @default.
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- W2101809622 doi "https://doi.org/10.1002/cjs.10068" @default.
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