Abstract
Plotting the percentages of juvenile, prime, and old individuals on a triangular graph has become a popular method for analysing mortality profiles or age structures found in archaeological faunal samples. This method allows easy comparisons of multiple samples or multiple species and appears to work even with small sample sizes. However, the utility of triangular graphs is compromised for two reasons: (1) samples cannot be statistically compared and (2) the points on the graph are based on percentages, and, therefore, they do not provide information about sample size. The modified triangular graph described here offers a method for approximating 95% confidence intervals around the data points by using bootstrapping. Samples with non-overlapping contours are likely to have had different pre- or post-depositional histories. The 95% density contours reflect sample size since they shrink as samples get larger. Thus, the modified triangular graph allows more confident comparisons of three age class data.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
