DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:33:15 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 189/Presidio VRSN: W 189-901/Marfa ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 7,994,888 0.3853 20,749,774 11 388 .091334451 2 A 7,981,083 0.5842 13,661,559 12 219 .053281080 3 A 7,975,730 0.6579 12,123,013 14 144 .030768464 4 A 7,926,570 0.7034 11,268,937 15 73 .030264366 5 D3 10,667,299 0.8645 12,339,270 20 4,732 .063730944 6 F1 2,460,388 0.9031 2,724,380 7 74 .018530776 7 F1 2,458,053 0.9801 2,507,961 6 28 .000135901 8 F1 2,756,370 1.0733 2,568,126 4 9 .024972449 9 L1 1,194,004 1.4150 843,819 7 55 .183444020 10 L1 1,152,661 0.9965 1,156,709 6 15 .000265944 11 L1 1,297,424 1.0153 1,277,873 5 7 .002328122 RANDOM TOTALS: 53,864,470 81,221,421 107 5,744 CATG J EXCEPTION VALUES: 15,743,623 16,067,174 CATG D1 EXCEPTION VALUES: 13,060,210 16,939,411 CATG F1 EXCEPTION VALUES: 2,085,046 2,129,140 CATG L1 EXCEPTION VALUES: 805,764 808,744 TOTAL TEST VALUES (4): 85,559,113 117,165,890 MARGIN OF ERROR PERCENT: 5.0000004 MARGIN OF ERROR VALUE: 5,858,295 CONFIDENCE INTERVAL VALUES (5): LOCAL TEST VALUE: 85,559,113 (OUTSIDE CONFIDENCE INTERVAL) STATE LOWER LIMIT: 111,307,595 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) STATE UPPER LIMIT: 123,024,185 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 122,833,079 (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
