[R] Incomplete output with `sn' library package
manasi.vydyanath at gmail.com
Thu Aug 30 08:48:31 CEST 2007
Dear R users:
I have a question regarding the output for two of the functions in
the `sn' package, which deals with the mle fitting of skew normal
curves to linear regressions. I'm using the examples and the dataset
given as an example in the online documentation for this package, for
the functions `msn.fit' and `msn.mle'. I'm following the example code
in the documentation for these two functions exactly.
Part of the data output is supposed to be "se", which gives the
standard errors of the estimated coefficients. This particular value
comes out as being "NA" in the examples given, but there are three
coefficients in each case and no numerical problems about why the
standard errors cannot be calculated.
Am I setting this program up right? Is there some other command I
should use (or an option I need to use) to get the output to display
standard errors of the coefficients?
Thank you for your time in reading this question -
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