DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 10:55:59 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 014/Bell VRSN: W 014-910/Troy ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 21,589,570 0.9899 21,809,849 19 407 .045557267 2 A 21,592,296 0.9528 22,661,940 12 267 .020872670 3 A 21,657,237 0.9335 23,200,040 13 194 .014054555 4 A 21,456,379 1.0434 20,563,906 12 129 .027946816 5 D3 61,103,144 0.9505 64,285,265 22 2,380 .038509608 6 F1 1,462,103 0.7952 1,838,661 7 34 .045273410 7 F1 1,390,774 0.7791 1,785,103 7 15 .323204983 8 F1 2,771,973 0.8765 3,162,548 5 9 .002962967 9 L1 2,065,992 1.0418 1,983,098 7 102 .008064918 10 L1 2,103,852 0.9512 2,211,787 6 14 .050556691 RANDOM TOTALS: 157,193,320 163,502,197 110 3,551 CATG J EXCEPTION VALUES: 11,785,613 12,710,786 CATG D1 EXCEPTION VALUES: 10,133,490 9,447,613 CATG F1 EXCEPTION VALUES: 5,939,510 5,631,956 CATG L1 EXCEPTION VALUES: 4,711,528 4,654,228 TOTAL TEST VALUES (4): 189,763,461 195,946,780 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 9,797,339 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 186,149,441 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 189,763,461 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 205,744,119 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 175,949,675 (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
