DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 10:56:57 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 113/Houston VRSN: W 113-901/Crockett ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 28,695,378 0.9453 30,355,843 15 972 .010212799 2 A 28,733,669 0.9870 29,112,127 27 606 .018722667 3 A 28,695,144 0.9770 29,370,669 28 391 .006436945 4 A 28,619,868 0.9696 29,517,191 27 192 .005536753 5 D3 56,062,930 1.0035 55,867,394 27 3,567 .017205699 6 F1 11,872,351 0.9330 12,724,921 12 174 .008792535 7 F1 12,079,418 1.0072 11,993,068 10 52 .029095913 8 F1 11,977,221 1.1201 10,692,993 7 14 .044139383 9 F1 11,556,418 1.2438 9,291,219 4 5 .028811691 10 L1 7,433,106 1.4384 5,167,621 8 177 .221679140 11 L1 7,334,068 0.9546 7,682,870 7 45 .097151686 12 L1 7,587,943 1.2536 6,052,922 5 17 .119011966 13 L1 7,126,899 0.9881 7,212,730 3 4 .001815538 RANDOM TOTALS: 247,774,413 245,041,568 180 6,216 CATG J EXCEPTION VALUES: 12,004,139 12,140,772 CATG D1 EXCEPTION VALUES: 17,340,940 15,843,297 TOTAL TEST VALUES (4): 277,119,492 273,025,637 MARGIN OF ERROR PERCENT: 5.0000001 MARGIN OF ERROR VALUE: 13,651,282 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 259,374,355 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 277,119,492 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 286,676,919 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 270,906,663 (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
