DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:06:32 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 068/Ector VRSN: W 068-901/Ector County ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 452,273,932 0.9178 492,780,488 36 12,026 .033842681 2 A 452,303,957 0.9524 474,909,657 58 6,712 .014831670 3 A 452,411,716 0.9643 469,160,755 49 4,454 .006616240 4 A 452,075,760 0.9801 461,254,729 41 2,339 .007182355 5 F1 161,766,069 0.9931 162,890,010 12 1,983 .055793390 6 F1 162,215,499 0.8775 184,860,968 15 510 .129394336 7 F1 162,256,959 1.0146 159,922,096 12 115 .051391676 8 F1 160,512,121 1.0456 153,511,975 10 13 .021231870 9 G1 471,062,094 1.0188 462,369,547 7 234 .020308794 10 G1 524,471,196 1.0366 505,953,305 5 25 .003235488 11 G1 573,790,986 1.0248 559,905,334 3 6 .000159087 12 L1 223,880,095 0.9840 227,520,422 8 1,164 .005749455 13 L1 223,821,638 1.0082 222,001,228 8 273 .003845801 14 L1 227,032,227 0.9557 237,555,956 7 92 .024330782 15 L1 220,179,624 1.0301 213,745,873 10 14 .004026084 RANDOM TOTALS: 4,920,053,873 4,988,342,343 281 29,960 CATG D1 EXCEPTION VALUES: 3,674,527 4,824,064 CATG G1 EXCEPTION VALUES: 309,795,139 318,239,659 TOTAL TEST VALUES (4): 5,233,523,539 5,311,406,066 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 265,570,303 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 5,045,835,763 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 5,233,523,539 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 5,576,976,369 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 5,730,559,948 (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
