DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:19:13 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 220/Tarrant VRSN: W 220-902/Birdville ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 925,679,304 0.9803 944,281,653 47 11,221 .004325400 2 A 925,985,629 1.0066 919,914,195 50 8,594 .003629953 3 A 922,797,871 0.9950 927,435,046 51 6,602 .004577614 4 A 924,567,709 0.9836 939,983,437 52 4,674 .004385732 5 B 111,667,162 1.0260 108,837,390 13 567 .013253189 6 B 110,762,696 0.9448 117,234,014 7 23 .011460230 7 B 114,396,745 0.9076 126,043,130 7 13 .022306637 8 F1 343,498,025 0.9737 352,776,035 12 839 .034869103 9 F1 343,753,447 0.7127 482,325,589 7 231 .329473413 10 F1 347,408,182 0.8966 387,472,878 6 79 .010062963 11 F1 339,166,977 0.9641 351,796,470 5 20 .012205902 12 L1 163,361,864 1.1144 146,591,766 7 1,175 .023710372 13 L1 162,789,768 0.9907 164,317,925 7 232 .009048105 14 L1 163,820,501 1.0505 155,945,265 7 62 .003442781 15 L1 162,269,351 1.0472 154,955,454 7 17 .027367750 RANDOM TOTALS: 6,061,925,231 6,279,910,247 285 34,349 CATG D1 EXCEPTION VALUES: 48,082 45,975 CATG B EXCEPTION VALUES: 109,650,735 108,026,000 TOTAL TEST VALUES (4): 6,171,624,048 6,387,982,222 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 319,399,111 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 6,068,583,111 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 6,171,624,048 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 6,707,381,333 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 6,284,425,100 (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
