 Usage:  {jb,probJB,sk,k} = jarber(resid,printout)  
 
 Input:

  resid                  (n x 1) matrix of observations 
                         
  printout               scalar, 0: no printout, 1: printout 
                         
 Output:

  jb                     test statistic of Jarque-Bera test 
                         
  probjB                 probability value of test statistics 
                         
  sk                     skewness 
                         
  k                      kurtosis 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
