DATE: 01/23/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:10:43 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 091/Grayson VRSN: W 091-908/Van Alstyne ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 51,996,607 1.0102 51,471,597 17 700 .012191479 2 A 51,895,223 1.0279 50,486,646 15 418 .008479534 3 A 51,827,964 1.0744 48,238,984 18 304 .006754221 4 A 51,899,965 1.0236 50,703,366 19 196 .004084851 5 D3 52,291,245 1.0247 51,030,785 23 1,905 .008016079 RANDOM TOTALS: 259,911,004 251,931,378 92 3,523 CATG D1 EXCEPTION VALUES: 4,945,006 3,368,988 TOTAL TEST VALUES (4): 264,856,010 255,300,366 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 12,765,018 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 242,535,348 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 264,856,010 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 268,065,384 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 299,814,783 (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
