From ISOGG Wiki
TiP is an abbreviation for Time Predictor. TiP is a proprietary tool provided by Family Tree DNA which allows for a probabilistic comparison between two Y-STR haplotypes to determine the time to the most recent common ancestor (TMRCA). The program incorporates marker-specific mutation rates to increase the power and precision of the TMRCA estimates.
- FTDNA Learning Center resources on the TiP calculator
- TiP - a detailed explanation from the Taylor Family Genes Project.