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...f you pass in a single element vector the first element of that is taken as the desired n (OK) , but otherwise the length of the vector argument is taken as the desired n. I came across this usage in an example for terasvirta.test (same for white.test) in tseries > example(terasvirta.test) trsvr.> n <- 1000 trsvr.> x <- runif(1000, -1, 1) trsvr.> y <- x^2 - x^3 + 0.1 * rnorm(x) trsvr.> terasvirta.test(x, y) and it seemed to me that rnorm(n) was what was intended, not that it would make any difference in practice in this case. Is this a standard practice? .. that in...