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2009 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 951,856,739 1.0143 938,437,089 70 3,915 .012497910
A 910,313,350 0.9826 926,433,289 70 2,034 .007705883
A 953,210,207 0.9833 969,399,173 34 1,345 .003295383
A 963,154,913 1.0009 962,288,853 28 645 .009481020
F1 244,486,065 0.8878 275,384,169 9 249 .057632990
F1 222,077,967 0.9781 227,050,370 6 35 .018039180
F1 251,055,844 0.8764 286,462,624 5 16 .006788751
F1 257,958,387 0.9170 281,306,856 4 7 .011774214
L1 83,358,711 1.0597 78,662,556 7 474 .006102582
L1 76,932,365 1.0294 74,735,152 6 59 .005556327
L1 118,871,546 0.9941 119,577,051 6 15 .000160074
Random Totals: 5,033,276,094   5,139,737,182 245 8,794  
Total Test Values (4): 5,033,276,094   5,139,737,182      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 256,986,859

Confidence Interval Values (5)

State Lower Limit: 4,882,750,323 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,033,276,094 (Within Confidence Interval)
State Upper Limit: 5,396,724,041 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,969,218,681 (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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