DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:24:58 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 246/Williamson VRSN: W 246-909/Round Rock ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 2,100,657,342 0.9726 2,159,836,872 100 16,576 .002573577 2 A 2,100,687,540 0.9849 2,132,894,243 99 12,767 .004008434 3 A 2,100,591,444 0.9862 2,129,985,240 100 9,539 .004383097 4 A 2,100,378,864 0.9837 2,135,182,336 99 6,323 .002582031 5 B 355,811,336 0.9776 363,964,133 57 1,207 .005909203 6 B 355,633,995 0.9916 358,646,627 8 35 .005704970 7 B 377,013,073 0.9638 391,173,556 6 18 .004131734 8 B 331,619,009 1.0054 329,837,884 7 10 .003159580 9 C 107,840,615 0.9758 110,515,080 27 1,736 .012044209 10 C 108,364,621 1.0239 105,835,161 8 194 .009494518 11 C 109,916,780 1.0122 108,591,958 8 68 .000650159 12 C 104,465,450 0.9778 106,837,237 6 17 .000485271 13 D3 74,404,087 0.9731 76,460,885 14 580 .004871478 14 F1 595,762,231 0.9691 614,758,261 14 651 .009259070 15 F1 595,325,530 0.8878 670,562,661 8 174 .023764959 16 F1 1,187,050,941 0.9110 1,303,019,694 13 73 .073263679 17 L1 231,190,223 0.9989 231,444,812 7 1,322 .002965900 18 L1 233,035,878 0.9354 249,129,654 7 197 .025310217 19 L1 459,254,660 0.9649 475,960,887 8 61 .000840200 RANDOM TOTALS: 13,629,003,619 14,054,637,181 596 51,548 CATG D1 EXCEPTION VALUES: 1,898,775 1,898,817 TOTAL TEST VALUES (4): 13,630,902,394 14,056,535,998 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 702,826,800 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 13,353,709,198 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 13,630,902,394 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 14,759,362,798 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 14,572,982,698 (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
