DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 10:43:33 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 057/Dallas VRSN: W 057-907/Duncanville ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 475,017,930 1.0077 471,388,241 43 5,124 .004896820 2 A 475,104,136 1.0242 463,878,282 43 3,975 .005156262 3 A 475,116,365 1.0111 469,900,470 43 3,108 .003180286 4 A 475,064,635 1.0145 468,274,653 46 1,971 .004413377 5 B 40,806,109 0.9569 42,644,068 17 249 .088625665 6 B 41,339,143 0.9223 44,821,797 4 8 .004192137 7 B 37,064,915 0.9840 37,667,597 3 5 .000590580 8 B 36,049,912 0.9766 36,913,692 3 4 .005841082 9 F1 109,698,514 0.9562 114,723,399 15 380 .008396580 10 F1 109,473,106 1.0162 107,727,914 14 117 .016175831 11 F1 110,461,336 0.9675 114,171,924 12 48 .013522758 12 F1 108,106,919 0.9711 111,324,188 9 20 .002583511 13 L1 54,136,919 1.1156 48,527,177 7 454 .013195503 14 L1 54,846,094 0.9980 54,956,006 7 72 .001084285 15 L1 57,779,819 1.0085 57,292,830 7 21 .005515691 16 L1 49,919,716 0.9925 50,296,943 5 6 .001263511 RANDOM TOTALS: 2,709,985,568 2,694,509,181 278 15,562 CATG D1 EXCEPTION VALUES: 175,787 190,280 TOTAL TEST VALUES (4): 2,710,161,355 2,694,699,461 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 134,734,973 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 2,559,964,488 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 2,710,161,355 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 2,829,434,434 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 2,999,912,114 (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
