DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:09:37 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 084/Galveston VRSN: W 084-906/Texas City ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 149,367,594 0.9827 151,997,145 35 2,937 .031277878 2 A 149,520,454 0.9496 157,456,249 48 1,966 .012677603 3 A 149,172,690 0.9811 152,046,366 55 1,415 .008594305 4 A 149,227,922 1.0117 147,502,147 50 868 .007630611 5 F1 17,416,761 0.7836 22,226,596 8 256 .061423820 6 F1 17,472,062 0.9573 18,251,397 7 98 .014150304 7 F1 17,991,113 0.8820 20,398,087 9 40 .006643491 8 F1 16,602,807 0.8558 19,400,335 6 9 .035063369 9 L1 15,138,975 0.9920 15,261,064 7 262 .015504910 10 L1 15,762,499 0.9832 16,031,834 6 43 .010159332 11 L1 29,191,878 0.8620 33,865,288 5 11 .041246834 RANDOM TOTALS: 726,864,755 754,436,508 236 7,905 CATG J EXCEPTION VALUES: 20,782,390 22,035,712 CATG D1 EXCEPTION VALUES: 31,660 22,918 TOTAL TEST VALUES (4): 747,678,805 776,495,138 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 38,824,757 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 737,670,381 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 747,678,805 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 815,319,895 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 3,241,672,467 (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
