weakIVtest: Weak-IV robust test
In yuchang0321/IVQR: IVQR: Instrumental Variable Quantile Regression

Description Usage Arguments Value Examples

Weak-IV robust test

1	weakIVtest(object, size = 0.05)

`object`	An ivqr object returned from the function `ivqr()`
`size`	A number indicating the size of the test. Default is 0.05. package quantreg.

An ivqr_weakIV object, which will be directly inputted into the method plot.ivqr_weakIV() to visualize the confidence region. It is also possible to print the confidence region by applying the method print() to the ivqr_weakIV object. Note that the confidence region is not guaranteed to be convex.

data(ivqr_eg)
fit <- ivqr(y ~ d | z | x, seq(0.1,0.9,0.1), grid = seq(-2,2,0.2), data = ivqr_eg) # a process
weakIVtest(fit)
print(fit) # print the confidence region.