DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:24:44 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-904/Georgetown ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 621,480,384 0.9657 643,554,296 59 4,950 .002602235 2 A 621,511,340 0.9595 647,745,013 59 3,666 .006109579 3 A 621,284,451 0.9621 645,758,706 59 2,759 .004481600 4 A 621,321,081 0.9352 664,372,413 59 1,800 .010747792 5 C 42,916,063 1.0165 42,219,442 26 1,198 .019638850 6 C 42,957,077 0.9491 45,260,854 11 371 .093631292 7 C 42,772,715 1.0297 41,539,007 10 71 .008560855 8 C 42,810,615 1.0081 42,466,635 6 14 .000885386 9 D3 157,469,673 0.9936 158,483,970 15 2,931 .003038867 10 F1 97,422,455 0.9066 107,459,139 8 381 .015348159 11 F1 98,348,005 0.9536 103,133,395 9 136 .008896240 12 F1 98,842,204 0.9972 99,119,739 7 48 .003159156 13 F1 94,557,832 0.9945 95,080,776 5 12 .001544670 RANDOM TOTALS: 3,203,693,895 3,336,193,385 333 18,337 CATG D1 EXCEPTION VALUES: 9,227,353 9,690,513 TOTAL TEST VALUES (4): 3,212,921,248 3,345,883,898 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 167,294,195 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 3,178,589,703 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 3,212,921,248 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 3,513,178,093 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 3,418,117,555 (SEE ISD SUMMARY WORKSHEET) SOURCES: (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430 (2) NUMBER OF PARCELS SAMPLED BY STAFF (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES
