DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 10:43:37 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 057/Dallas VRSN: W 057-910/Grand Prairie ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 622,704,201 0.9551 651,978,014 43 7,725 .013767191 2 A 621,644,268 0.9659 643,590,711 48 5,833 .003880727 3 A 622,141,693 0.9837 632,450,638 46 4,571 .005168945 4 A 621,985,489 1.0197 609,969,098 49 3,180 .004919884 5 B 63,084,283 0.9961 63,331,275 41 919 .004132882 6 B 61,426,161 0.9993 61,469,189 9 52 .001101959 7 B 63,868,720 0.9163 69,702,848 4 8 .003953899 8 B 58,915,988 0.9897 59,529,138 3 4 .002292085 9 F1 142,880,779 0.9784 146,035,138 7 480 .002326222 10 F1 144,918,108 0.9032 160,449,632 7 115 .079822531 11 F1 144,661,748 0.9301 155,533,543 6 33 .028809740 12 F1 138,902,296 0.9885 140,518,256 5 13 .001662943 13 L1 91,328,102 1.3904 65,684,768 7 519 .070602035 14 L1 92,055,186 1.0863 84,741,955 7 79 .009294213 15 L1 92,321,744 0.8776 105,197,976 7 26 .171318420 RANDOM TOTALS: 3,582,838,766 3,650,182,179 289 23,557 CATG D1 EXCEPTION VALUES: 179,838 171,039 CATG L1 EXCEPTION VALUES: 101,551,690 98,912,587 TOTAL TEST VALUES (4): 3,684,570,294 3,749,265,805 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 187,463,290 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 3,561,802,515 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 3,684,570,294 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 3,936,729,095 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 3,958,049,225 (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
