DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:37:45 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 1,065,790,636 0.9691 1,099,773,642 51 6,618 .001599805 2 A 1,065,439,112 0.9799 1,087,293,716 51 4,566 .002409555 3 A 1,065,328,986 0.9767 1,090,743,305 47 3,239 .008304256 4 A 1,064,999,634 0.9779 1,089,068,038 51 1,881 .001289096 5 B 122,626,723 1.1418 107,397,726 12 830 .003515415 6 B 130,777,202 0.8656 151,082,720 7 17 .068782475 7 B 120,272,385 0.9545 126,005,642 5 7 .002344368 8 F1 466,222,072 0.8950 520,918,516 7 436 .010666473 9 F1 463,427,582 0.9012 514,233,890 7 120 .020842188 10 F1 485,530,232 0.9333 520,229,542 6 37 .004373609 11 L1 572,116,225 1.0624 538,513,013 7 416 .003385059 12 L1 584,400,684 1.1053 528,725,852 7 17 .016584640 13 L1 595,774,009 1.0000 595,774,009 3 5 RANDOM TOTALS: 7,802,705,482 7,969,759,611 261 18,189 CATG D1 EXCEPTION VALUES: 119,359 126,239 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): 9,067,001,955 9,232,375,350 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 461,618,768 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 8,770,756,582 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 9,067,001,955 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 9,693,994,118 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 8,489,100,469 (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
