AVEMAEw                 Average mean absolute error (aMAE)
AVEMAPEw                Average mean absolute percentage error (aMAPE)
AVEMSEw                 Average mean squared error (aMSE) with
                        bias-variance decomposition
AVEMSLEw                Average mean squared logarithmic error (aMSLE)
AVERAEw                 Average relative absolute error (aRAE)
AVERMSEw                Average root mean squared error (aRMSE)
AVERMSLEw               Average root mean squared logarithmic error
                        (aRMSLE)
AVERRSEw                Average root relative squared error (aRRSE)
AVERSEw                 Average relative squared error (aRSE)
AVESMAPEw               Average symmetric mean absolute percentage
                        error (aSMAPE)
FULLSDw                 Full scale-dependent statistics
FULLSIw                 Full scale-independent statistics
TESTWGT                 A data set created by merging 1) "actual" data
                        from a "gold standard" survey (A1, A2), and 2)
                        data from another survey (Q1, Q2), including
                        weights columns for that data (W1, W2). A1/Q1
                        and A2/Q2 are responses to the same two
                        questions, asked to the same 10 respondents
                        (ID), along the same 1-99 response scale.
