DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:24:46 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-905/Granger ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 9,490,992 0.9708 9,776,465 9 561 .003867855 2 A 9,445,484 0.8579 11,010,006 7 215 .089722416 3 A 9,493,683 0.9622 9,866,642 9 140 .013793425 4 A 9,433,839 0.9599 9,827,939 7 79 .011597122 5 D3 28,096,485 0.9992 28,118,980 37 1,530 .089678669 6 F1 1,123,009 0.9613 1,168,219 7 55 .012649148 7 F1 1,072,421 0.9836 1,090,302 6 18 .021030641 8 F1 1,086,959 0.9016 1,205,589 6 9 .015166898 RANDOM TOTALS: 69,242,872 72,064,142 88 2,607 CATG J EXCEPTION VALUES: 5,458,999 5,434,478 CATG D1 EXCEPTION VALUES: 10,143,518 11,351,556 CATG F1 EXCEPTION VALUES: 931,643 998,552 TOTAL TEST VALUES (4): 85,777,032 89,848,728 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 4,492,436 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 85,356,292 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 85,777,032 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 94,341,164 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 79,333,899 (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
