| 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 |