DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:23:12 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 240/Webb VRSN: W 240-904/Webb CISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 D3 18,314,020 0.9347 19,593,474 10 2,278 .009709587 2 G1 238,689,300 0.9638 247,654,389 8 475 .002723522 3 G1 239,738,259 1.0776 222,474,257 8 208 .008546746 4 G1 239,000,080 1.0090 236,868,266 8 120 .012907013 5 G1 236,633,861 0.9403 251,657,834 7 66 .023521556 RANDOM TOTALS: 972,375,520 978,248,220 41 3,147 CATG D1 EXCEPTION VALUES: 23,813,360 36,943,553 TOTAL TEST VALUES (4): 996,188,880 1,015,191,773 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 50,759,589 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 964,432,184 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 996,188,880 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 1,065,951,362 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 1,156,928,245 (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
