DATE: 01/27/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:02:56 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 240/Webb VRSN: W 240-901/Laredo ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 237,189,005 0.8741 271,352,254 31 6,248 .042875436 2 A 237,137,401 0.8746 271,138,121 29 4,038 .023972596 3 A 237,262,619 0.9599 247,174,309 22 2,915 .027796001 4 A 236,988,629 0.9607 246,683,282 15 1,782 .014534897 5 B 28,042,699 0.9319 30,091,962 7 217 .021101180 6 B 27,897,190 0.9213 30,280,245 8 129 .005961635 7 B 28,148,241 0.9297 30,276,692 7 75 .003543629 8 B 27,450,315 0.9047 30,341,898 6 28 .002412057 9 F1 130,340,208 0.9705 134,302,121 8 958 .022564813 10 F1 130,062,788 1.0179 127,775,605 8 336 .012263394 11 F1 133,482,586 0.9296 143,591,422 8 125 .001893523 12 F1 126,693,198 0.9603 131,930,853 4 7 .002121473 13 L1 39,353,961 0.9817 40,087,563 7 872 .006338467 14 L1 39,248,946 0.9912 39,597,403 7 220 .021349931 15 L1 39,344,360 0.9136 43,065,193 9 62 .019741905 16 L1 39,169,560 0.9115 42,972,639 4 8 .002286728 RANDOM TOTALS: 1,737,811,706 1,860,661,562 180 18,020 CATG D1 EXCEPTION VALUES: 16,570 20,690 TOTAL TEST VALUES (4): 1,737,828,276 1,860,682,252 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 93,034,113 CONFIDENCE INTERVAL VALUES (5): LOCAL TEST VALUE: 1,737,828,276 (OUTSIDE CONFIDENCE INTERVAL) STATE LOWER LIMIT: 1,767,648,139 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) STATE UPPER LIMIT: 1,953,716,365 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 1,723,802,592 (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
