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2007 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 53,498,298 0.9734 54,960,240 17 1,103 .061284240
A 53,489,498 1.1708 45,686,281 16 651 .024141328
A 53,466,599 0.9934 53,821,823 15 470 .033968064
A 53,480,087 1.0303 51,907,296 23 276 .030205158
C 6,519,276 0.7925 8,226,216 7 685 .063423785
C 6,517,953 1.0365 6,288,425 8 329 .114795925
C 7,191,541 1.1829 6,079,585 8 241 .095451145
C 5,798,608 1.1087 5,230,097 8 118 .037638181
D3 64,519,546 1.0594 60,901,969 22 1,980 .001746932
F1 5,739,210 0.8926 6,429,767 8 67 .034409188
F1 5,639,270 0.9029 6,245,730 6 30 .010594917
F1 5,971,351 0.9145 6,529,635 6 17 .016595824
F1 5,083,166 0.9846 5,162,671 4 5 .171113251
Random Totals: 326,914,403   317,469,735 148 5,972  
Catg D1 Exception Values: 2,321,656   3,306,700      
Total Test Values (4): 329,236,059   320,776,435      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 16,038,822

Confidence Interval Values (5)

State Lower Limit: 304,737,613 (State Test Value minus Margin of Error Percent)
Local Test Value: 329,236,059 (Within Confidence Interval)
State Upper Limit: 336,815,257 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 317,294,529 (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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