DATE: 06/29/2006 COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION PAGE: 1 TIME: 11:18:32 2005 CONFIDENCE INTERVAL DETAIL REPT: PTS428 212/Smith VRSN: W 212-909/Chapel Hill ISD ____________________________________________________________________________________________________________________________________ (1) (1) (1) (1) (1) (2) (3) # STRATUM CATEGORY LOCAL VALUE STRATUM RATIO STATE VALUE SAMPLE SIZE TOTAL PARCELS STRATUM VARIANCE _________ ________ ___________ _____________ ___________ ___________ _____________ ________________ 1 A 111,921,280 0.9573 116,913,486 19 2,023 .022821693 2 A 111,574,412 0.9887 112,849,613 23 1,327 .003244864 3 A 111,543,320 0.9951 112,092,574 21 910 .002638699 4 A 111,486,873 0.9982 111,687,911 35 464 .003876808 5 D3 83,435,970 0.9877 84,475,013 27 5,164 .177567750 6 F1 13,778,496 1.0007 13,768,858 7 119 .045250133 7 F1 13,817,558 0.8952 15,435,163 7 42 .022744256 8 F1 13,783,487 0.9421 14,630,599 6 19 .138330942 9 F1 13,514,485 0.9455 14,293,480 3 5 .008295520 10 L1 26,371,438 0.9919 26,586,791 7 133 .023351305 11 L1 25,781,277 1.0773 23,931,381 5 23 .021844483 12 L1 28,655,313 1.1865 24,151,128 4 9 .026213366 RANDOM TOTALS: 665,663,909 670,815,997 164 10,238 CATG D1 EXCEPTION VALUES: 12,106,036 10,142,634 CATG L1 EXCEPTION VALUES: 20,500,810 19,508,118 TOTAL TEST VALUES (4): 698,270,755 700,466,749 MARGIN OF ERROR PERCENT: 5.0000000 MARGIN OF ERROR VALUE: 35,023,337 CONFIDENCE INTERVAL VALUES (5): STATE LOWER LIMIT: 665,443,412 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT) LOCAL TEST VALUE: 698,270,755 (WITHIN CONFIDENCE INTERVAL) STATE UPPER LIMIT: 735,490,086 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT) VALUE ASSIGNED (6): 766,454,176 (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
