DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:16:11 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 199/Rockwall VRSN: W 199-901/Rockwall ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 760,418,626 0.9595 792,515,504 50 5,341 .005887165 2 A 759,254,612 0.9923 765,146,238 49 3,815 .005728168 3 A 759,635,003 0.9921 765,683,906 49 2,786 .006726958 4 A 759,635,911 0.9610 790,464,007 50 1,535 .011128553 5 D3 209,323,890 0.9435 221,858,919 19 1,944 .012036596 6 F1 110,038,695 0.9926 110,859,052 7 241 .002124509 7 F1 112,046,573 0.9934 112,790,994 7 78 .006907985 8 F1 111,434,049 0.9643 115,559,524 8 30 .037820976 RANDOM TOTALS: 3,581,787,359 3,674,878,144 239 15,770 CATG D1 EXCEPTION VALUES: 3,016,850 2,688,457 CATG F1 EXCEPTION VALUES: 99,890,392 104,847,470 TOTAL TEST VALUES (4): 3,684,694,601 3,782,414,071 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 189,120,704 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 3,593,293,367 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 3,684,694,601 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 3,971,534,775 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 4,111,339,806 (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
