a                       A pre-calibrated spline function needed to
                        translate the number of upper/lower records in
                        to signa-to-noise ratios.
computeR0bar            Computes the average difference between the
                        number of upper and lower records of the
                        cumulative sum of the sample values.
estimateSNR             computes the signal-to-noise ratio
f                       A pre-calibrated spline function needed to
                        translate the number of upper/lower records in
                        to signa-to-noise ratios.
num_records_down        Computes the number of lower records of the
                        cumulative sum of 'x'
num_records_up          Computes the number of upper records of the
                        cumulative sum of 'x'
sharpeRratio-package    A moment-free estimator of the Sharpe
                        (signal-to-noise) ratio
