DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:25:00 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-911/Taylor ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 94,969,538 0.9151 103,780,503 26 1,494 .043253125 2 A 94,882,873 0.9784 96,977,589 38 965 .015356066 3 A 95,024,137 0.9668 98,287,275 37 777 .007501306 4 A 94,790,923 0.9768 97,042,304 29 525 .011286785 5 D3 43,995,280 0.9613 45,766,441 12 1,445 .011199728 6 F1 29,181,836 0.9756 29,911,681 8 198 .018479836 7 F1 30,213,745 0.9582 31,531,773 7 49 .005185574 8 F1 32,490,404 0.8137 39,929,217 5 6 .023849177 9 L1 7,308,261 1.0038 7,280,595 7 159 .031735683 10 L1 7,296,369 1.0010 7,289,080 6 45 .001904320 11 L1 8,350,936 1.0151 8,226,713 3 11 .000188074 RANDOM TOTALS: 538,504,302 566,023,171 178 5,674 CATG D1 EXCEPTION VALUES: 8,303,433 9,290,893 CATG F1 EXCEPTION VALUES: 18,291,080 18,291,080 CATG L1 EXCEPTION VALUES: 11,992,995 11,446,302 TOTAL TEST VALUES (4): 577,091,810 605,051,446 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 30,252,572 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 574,798,874 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 577,091,810 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 635,304,018 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 656,587,724 (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
