DATE: 06/22/2005 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:08:38 2004 CONFIDENCE INTERVAL DETAIL REPT: PTS428 113/Houston VRSN: W 113-902/Grapeland ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS _________ ________ ___________ _____________ ___________ ___________ _____________ 1 A 11,655,836 0.9185 12,690,077 12 393 2 A 11,664,714 0.8928 13,065,316 10 227 3 A 11,670,700 0.9739 11,983,469 10 162 4 A 11,667,766 1.0122 11,527,135 12 97 5 D3 46,695,090 0.9819 47,555,851 28 4,032 6 G1 9,898,650 1.0153 9,749,483 7 40 RANDOM TOTALS: 103,252,756 106,571,331 79 4,951 CATG J EXCEPTION VALUES: 6,571,610 7,164,403 CATG D1 EXCEPTION VALUES: 16,622,120 14,249,765 CATG G1 EXCEPTION VALUES: 3,401,040 3,310,650 TOTAL TEST VALUES (4): 129,847,526 131,296,149 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 6,564,807 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 124,731,342 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 129,847,526 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 137,860,956 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 160,425,887 (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
