How accurate are the indirect estimates?
Overall, the levels of precision of the 2003 and 1992 model estimates for sample counties are fairly comparable. The county estimates have median coefficients of variation (CVs) of 33.0 percent for the 2003 NAAL and 34.7 percent for the 1992 NALS. The state estimates are more precise, with median CVs of 14.0 and 15.3 for the 2003 NAAL and the 1992 NALS, respectively. Overall, the analysis of the 2003 and 1992 results indicated that gains in precision were achieved in the indirect estimates for SAAL and SALS states as a result of their increased sample size.
