DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:16:13 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 199/Rockwall VRSN: W 199-902/Royse City ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 89,300,817 0.9145 97,649,882 18 942 .008563914 2 A 89,055,420 0.9870 90,228,389 46 631 .005422768 3 A 89,080,413 1.0063 88,522,720 50 489 .004226418 4 A 89,015,218 1.0596 84,008,322 50 340 .008320168 5 C 8,563,502 0.9667 8,858,490 7 420 .023266906 6 C 8,554,638 0.9240 9,258,266 11 288 .006498885 7 C 8,575,891 0.9360 9,162,277 10 177 .005875847 8 C 8,533,935 0.9990 8,542,477 11 112 .008792566 9 D3 99,581,440 0.9605 103,676,668 26 2,357 .015465585 10 F1 7,427,428 0.9783 7,592,178 6 67 .009904586 11 F1 7,235,918 0.9774 7,403,231 8 25 .036707676 12 F1 7,768,895 0.9875 7,867,235 6 14 .021362410 RANDOM TOTALS: 512,693,515 522,770,135 249 5,862 CATG J EXCEPTION VALUES: 28,520,547 29,324,915 CATG D1 EXCEPTION VALUES: 3,661,250 3,783,608 CATG F1 EXCEPTION VALUES: 5,065,600 6,699,114 TOTAL TEST VALUES (4): 549,940,912 562,577,772 MARGIN OF ERROR PERCENT: 5.0000001 MARGIN OF ERROR VALUE: 28,128,889 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 534,448,883 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 549,940,912 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 590,706,661 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 598,906,094 (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
