<gh_stars>0

STANDARD_SCALE_MESSAGE = 'Exogenous variables were scaled to zero mean and unit variance.'
ROBUST_SCALE_MESSAGE = 'Exogenous variables were scaled to zero median and unit interquartile range.'

STANDARD_SCALE_MESSAGE = 'Exogenous variables were scaled to zero mean and unit variance.'
ROBUST_SCALE_MESSAGE = 'Exogenous variables were scaled to zero median and unit interquartile range.'