TERMINAL INDEX is a bio-economic index which considers six growth and carcass-related traits, each trait weighted according to its heritability and economic importance in aquelity grade. the value is expressed in standard deviation terms, which can be feedlot situation with carcasses valued by weight, yield, and quality geader than the acyual e. the value is expressed in standard deviation terms, which can be difficult to comprehend. IBBA advisesbreeders to evaluate the percentile rank rather than the actual index value.