DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:25:11 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-914/Coupland ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 3,376,046 0.9979 3,383,151 6 164 .004527510 2 A 3,398,023 0.9905 3,430,614 8 83 .017627433 3 A 3,406,787 0.9752 3,493,424 8 48 .009364473 4 A 3,267,038 1.0094 3,236,614 7 26 .005389866 5 D3 19,276,022 1.0113 19,060,637 23 737 .025298938 RANDOM TOTALS: 32,723,916 32,604,440 52 1,058 CATG J EXCEPTION VALUES: 4,733,469 4,784,962 CATG D1 EXCEPTION VALUES: 4,072,860 4,419,554 TOTAL TEST VALUES (4): 41,530,245 41,808,956 MARGIN OF ERROR PERCENT: 5.0000005 MARGIN OF ERROR VALUE: 2,090,448 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 39,718,508 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 41,530,245 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 43,899,404 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 41,228,943 (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
