DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 10:43:57 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 057/Dallas VRSN: W 057-922/Coppell ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 713,228,226 0.9985 714,299,676 46 3,914 .000718931 2 A 712,959,934 0.9912 719,289,683 49 2,743 .000845891 3 A 713,187,909 0.9893 720,901,556 50 2,146 .001254185 4 A 713,113,670 0.9837 724,930,029 49 1,446 .001214890 5 F1 407,035,317 0.9602 423,906,808 7 141 .007621210 6 F1 401,686,253 0.9203 436,473,164 6 56 .005414771 7 F1 420,022,488 0.8777 478,549,035 6 32 .008814836 8 F1 390,015,249 0.8333 468,037,020 5 17 .101018841 9 L1 301,265,209 0.9016 334,145,085 7 248 .077440566 10 L1 307,972,418 0.9957 309,302,418 7 57 .001005260 11 L1 311,827,630 1.0327 301,953,743 7 20 .003056417 12 L1 282,281,224 1.0236 275,772,982 5 7 .003765000 RANDOM TOTALS: 5,674,595,527 5,907,561,199 244 10,827 CATG D1 EXCEPTION VALUES: 200,607 185,878 TOTAL TEST VALUES (4): 5,674,796,134 5,907,747,077 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 295,387,354 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 5,612,359,723 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 5,674,796,134 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 6,203,134,431 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 6,095,168,081 (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
