DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:32:42 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 187/Polk VRSN: W 187-901/Big Sandy ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 5,291,727 0.8201 6,452,539 7 291 .072724324 2 A 5,297,957 1.0269 5,159,175 7 141 .167362615 3 A 5,239,968 0.9035 5,799,633 6 81 .067877120 4 A 5,274,304 1.0982 4,802,681 6 44 .060935339 5 D3 10,195,714 0.9983 10,213,076 10 1,261 .009052503 6 G1 62,507,238 0.9734 64,215,367 5 16 .008165402 7 G1 66,556,348 0.9779 68,060,485 4 7 .008004730 8 G1 59,798,502 0.9868 60,598,401 3 4 .006496236 RANDOM TOTALS: 220,161,758 225,301,357 48 1,845 CATG D1 EXCEPTION VALUES: 26,428,774 26,672,652 CATG G1 EXCEPTION VALUES: 47,047,846 43,638,665 TOTAL TEST VALUES (4): 293,638,378 295,612,674 MARGIN OF ERROR PERCENT: 5.0000001 MARGIN OF ERROR VALUE: 14,780,634 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 280,832,040 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 293,638,378 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 310,393,308 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 280,077,938 (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
