CV                      Calculate coefficient of variation of data
CVlnorm                 CV of log-normal dist baed on omega parameters
                        CV based variance like provided in Nonmem's
                        'OMEGA' metrix.
invlogit                Inverse logit function
logit                   Logit function
means                   calculate arithmetic or geometric mean and
                        confidence intervals
quantbin                Bin observations by quantiles. Label by bin
                        number or by interval.
seqlog                  Log-scale equidistant sequences
signif2                 round to fixed number of significant digits
trapez                  trapezoidal area under the curve on linear
                        scale
