DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:24:50 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-906/Hutto ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 125,524,211 0.9495 132,200,328 57 941 .005322372 2 A 125,591,269 0.9660 130,011,666 56 803 .003877671 3 A 125,463,359 0.9730 128,944,871 57 699 .004193381 4 A 125,412,621 0.9859 127,206,229 40 422 .003877062 5 C 20,560,376 0.8788 23,395,967 10 1,065 .113054687 6 C 1,443,074 1.0505 1,373,702 6 56 .022191507 7 C 9,837,662 1.0978 8,961,252 15 267 .057915241 8 C 10,577,254 0.9788 10,806,349 8 72 .022978420 9 D3 70,570,718 1.1486 61,440,639 13 1,291 .109556543 10 F1 18,324,963 0.9535 19,218,629 6 66 .004187353 11 F1 18,652,241 0.9626 19,376,938 7 34 .009621136 12 F1 19,285,288 0.9713 19,855,130 6 14 .001119095 13 L1 10,095,055 0.9770 10,332,707 6 99 .004191551 14 L1 9,853,415 1.0086 9,769,398 7 26 .000680748 RANDOM TOTALS: 691,191,506 702,893,805 294 5,855 CATG D1 EXCEPTION VALUES: 6,685,029 7,484,395 CATG F1 EXCEPTION VALUES: 10,033,397 10,773,931 CATG L1 EXCEPTION VALUES: 19,759,141 20,414,328 TOTAL TEST VALUES (4): 727,669,073 741,566,459 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 37,078,323 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 704,488,136 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 727,669,073 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 778,644,782 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 789,375,814 (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
