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2008 Confidence Interval Detail
015/Bexar
015-901/Alamo Heights ISD

Category Summary

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

Stratum
Variance
A 836,478,866 0.9617 869,791,896 70 3,671 .011440511
A 920,205,591 0.9692 949,448,608 70 2,196 .009978250
A 922,846,354 0.9684 952,959,886 46 1,392 .005098672
A 1,061,565,541 0.9811 1,082,015,637 25 780 .003485935
F1 244,000,086 0.9952 245,176,935 7 269 .002810785
F1 207,476,025 0.8780 236,305,268 6 35 .011976288
F1 215,398,847 1.0057 214,178,032 5 16 .002409878
F1 334,307,796 1.0347 323,096,353 5 11 .008081518
L1 77,585,976 0.9945 78,015,059 7 501 .025405676
L1 75,516,497 1.0808 69,870,926 6 61 .018557168
L1 168,693,148 1.0314 163,557,444 6 21 .005652757
Random Totals: 5,064,074,727   5,184,416,044 253 8,953  
Total Test Values (4): 5,064,074,727   5,184,416,044      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 259,220,802

Confidence Interval Values (5)

State Lower Limit: 4,925,195,242 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,064,074,727 (Within Confidence Interval)
State Upper Limit: 5,443,636,846 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,855,884,841 (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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