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2008 Confidence Interval Detail
015/Bexar
015-909/Somerset ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 32,044,745 0.9762 32,826,004 16 700 .023732015
A 31,885,259 1.0603 30,071,922 16 410 .026242376
A 38,142,470 0.9883 38,594,020 15 335 .014706186
A 56,533,111 1.0467 54,010,806 17 265 .014459393
C 3,858,590 1.3744 2,807,472 7 418 .015780356
C 2,541,120 1.1125 2,284,153 6 125 .142936391
C 4,263,860 1.1839 3,601,537 7 146 .023551674
C 4,038,997 1.0112 3,994,261 8 65 .018630974
D3 58,399,348 1.1055 52,826,185 15 1,420 .045753017
F1 4,863,640 0.8106 6,000,049 6 61 .026903778
F1 5,742,068 0.9961 5,764,550 6 32 .027199219
F1 5,128,360 0.9639 5,320,427 6 14 .025247572
F1 6,296,943 1.0398 6,055,917 3 7 .006146072
Random Totals: 253,738,511   244,157,303 128 3,998  
Catg D1 Exception Values: 1,851,177   2,116,319      
Total Test Values (4): 255,589,688   246,273,622      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,313,681

Confidence Interval Values (5)

State Lower Limit: 233,959,941 (State Test Value minus Margin of Error Percent)
Local Test Value: 255,589,688 (Within Confidence Interval)
State Upper Limit: 258,587,303 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 242,538,803 (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
(6) Includes local value of unstudied property categories and sub-categories

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