DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:24:56 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-908/Liberty Hill ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 99,505,929 0.9731 102,256,632 37 948 .020553436 2 A 99,393,414 0.9876 100,641,367 31 527 .007863792 3 A 99,294,676 0.9676 102,619,549 39 361 .011274100 4 A 99,364,613 0.9938 99,984,517 19 222 .004912413 5 C 14,586,037 0.9915 14,711,081 17 536 .038989105 6 C 14,438,383 0.9063 15,931,130 24 292 .033186802 7 C 14,775,107 0.9634 15,336,420 9 134 .045935007 8 C 14,176,161 0.9946 14,253,128 11 64 .026889266 9 D3 79,867,613 1.0049 79,478,170 21 1,839 .001211698 10 F1 10,580,473 0.9793 10,804,118 7 70 .001435040 11 F1 10,524,764 0.9524 11,050,781 7 33 .001495322 12 F1 10,671,166 0.9167 11,640,849 5 17 .006390945 13 F1 9,798,652 0.9298 10,538,451 4 6 .008057801 RANDOM TOTALS: 576,976,988 589,246,193 231 5,049 CATG D1 EXCEPTION VALUES: 3,284,272 3,124,888 TOTAL TEST VALUES (4): 580,261,260 592,371,081 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 29,618,554 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 562,752,527 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 580,261,260 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 621,989,635 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 597,318,604 (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
