| ICC-package | Facilitating Estimation of the Intraclass Correlation Coefficient |
| effort | Plots the optimum 'k' measures per individual (or group), based upon a fixed total researcher effort. |
| ICCbare | Simple Estimation of the Intraclass Correlation Coefficient |
| ICCbareF | Simple Estimation of the Intraclass Correlation Coefficient |
| ICCest | Estimate the Intraclass Correlation Coefficient |
| Nest | Calculate the N individuals/groups required to estimate the ICC with a desired confidence interval |