DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:25:04 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-912/Thrall ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 13,155,144 0.8836 14,888,121 9 597 .021838352 2 A 7,093,688 1.0265 6,910,558 7 186 .011477051 3 A 10,106,073 0.9994 10,112,140 11 144 .003635943 4 A 10,114,718 0.9898 10,218,951 12 87 .017556726 5 D3 54,178,517 1.0255 52,831,318 22 2,312 .048698207 RANDOM TOTALS: 94,648,140 94,961,088 61 3,326 CATG J EXCEPTION VALUES: 9,389,239 9,387,991 CATG D1 EXCEPTION VALUES: 14,501,549 15,749,201 TOTAL TEST VALUES (4): 118,538,928 120,098,280 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 6,004,914 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 114,093,366 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 118,538,928 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 126,103,194 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 122,172,455 (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
