DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:25:06 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-913/Leander ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 1,423,615,784 0.9819 1,449,858,218 100 10,650 .005261423 2 A 1,423,616,988 0.9751 1,459,970,247 100 7,894 .007665789 3 A 1,423,698,335 0.9825 1,449,056,830 100 5,511 .007275696 4 A 1,423,346,119 0.9620 1,479,569,770 100 2,838 .020009337 5 B 122,893,107 1.0125 121,375,908 4 9 .006405626 6 B 120,918,841 0.9849 122,772,709 3 5 .001478053 7 C 112,056,660 0.9294 120,568,819 33 3,040 .048974814 8 C 107,074,468 0.9073 118,014,403 52 973 .035627371 9 C 109,493,167 1.0039 109,067,803 13 282 .008712316 10 C 108,955,068 1.0394 104,824,964 8 74 .021717201 11 D3 190,919,460 1.0395 183,664,704 11 1,973 .029655433 12 F1 145,309,982 1.0361 140,247,063 6 278 .001591576 13 F1 146,658,379 0.8975 163,407,665 7 97 .039806811 14 F1 148,847,828 0.9299 160,068,640 6 36 .151093518 15 F1 140,033,695 1.0216 137,072,920 4 11 .001136864 RANDOM TOTALS: 7,147,437,881 7,319,540,663 547 33,671 CATG D1 EXCEPTION VALUES: 4,674,480 4,516,943 CATG B EXCEPTION VALUES: 243,099,460 247,986,053 TOTAL TEST VALUES (4): 7,395,211,821 7,572,043,659 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 378,602,183 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 7,193,441,476 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 7,395,211,821 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 7,950,645,842 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 7,785,818,265 (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
