DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:19:19 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 220/Tarrant VRSN: W 220-906/Grapevine-Colleyville ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 1,065,802,902 0.9691 1,099,786,299 51 6,618 .001599805 2 A 1,065,451,374 0.9799 1,087,306,229 51 4,566 .002409555 3 A 1,065,341,247 0.9767 1,090,755,859 47 3,239 .008304256 4 A 1,065,011,890 0.9779 1,089,080,571 51 1,881 .001289096 5 B 126,008,729 1.1418 110,359,721 12 830 .003515415 6 B 134,383,995 0.8656 155,249,532 7 17 .068782475 7 B 123,589,459 0.9545 129,480,837 5 7 .002344368 8 F1 464,845,736 0.8950 519,380,711 7 436 .010666473 9 F1 462,059,497 0.9012 512,715,820 7 120 .020842188 10 F1 484,096,897 0.9333 518,693,772 6 37 .004373609 11 L1 570,218,569 1.0624 536,726,816 7 416 .003385059 12 L1 582,462,281 1.1053 526,972,117 7 17 .016584640 13 L1 593,797,882 1.0000 593,797,882 3 5 RANDOM TOTALS: 7,803,070,458 7,970,306,166 261 18,189 CATG D1 EXCEPTION VALUES: 115,760 123,248 CATG B EXCEPTION VALUES: 160,390,251 163,697,115 CATG F1 EXCEPTION VALUES: 435,716,998 435,484,482 CATG L1 EXCEPTION VALUES: 668,069,865 663,307,903 TOTAL TEST VALUES (4): 9,067,363,332 9,232,918,914 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 461,645,946 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 8,771,272,968 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 9,067,363,332 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 9,694,564,860 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 8,455,080,525 (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
