summary.front41Output {frontier}

Summarizing the Estimation of Frontier 4.1

Description

summary.front41Output summarizes the estimation results of a model estimated by Frontier 4.1..

Usage

## S3 method for class 'front41Output'
summary( object, ... )

## S3 method for class 'summary.front41Output'
print( x, efficiencies = FALSE, ... )

Arguments

object

an object of class front41Output (read/created by front41ReadOutput.

x

object of class summary.front41Output (returned by the summary method for objects of class front41ReadOutput).

efficiencies

logical. Print all efficiency estimates? (If FALSE, only the mean efficiency is printed.)

...

currently ignored.

Value

The summary method returns a list of class summary.front41Output with the same elements as object returned by front41ReadOutput. However, the elements olsResults, gridResults, and mleResults have an additional culumn with marginal significance levels (P values). The P values of the OLS estimates are calculated using the t distribution, while the (asymptotic) P values of the ML estimates are calculated based on the assumption that their t values follow an (asymptotic) standard normal distribution.

Author(s)

Arne Henningsen

See Also

front41ReadOutput, front41WriteInput.

Examples

   # read the output file that is provided with Frontier 4.1
   outFile <- system.file( "front41/EG1.OUT", package = "frontier" )
   sfa <- front41ReadOutput( outFile )
   summary( sfa )