Auto.VR {vrtest} | R Documentation |
Automatic Variance Ratio Test
Description
A variance ratio test with holding period value chosen by a data dependent procedure
Usage
Auto.VR(y)
Arguments
y |
financial return time series |
Value
stat |
Automatic variance ratio test statistic |
sum |
1+ weighted sum of autocorrelation up to the optimal order |
Note
R code translated from Choi's GAUSS code
Author(s)
Jae H. Kim
References
Choi, I. 1999, Testing the random walk hypothesis for real exchange rates Journal of Applied Econometrics, 14, 293-308.
Examples
data(exrates)
y <- exrates$ca
nob <- length(y)
r <- log(y[2:nob])-log(y[1:(nob-1)])
Auto.VR(r)
[Package vrtest version 1.2 Index]