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2009 Confidence Interval Detail
015/Bexar
015-912/Southwest ISD

Category Summary

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

Stratum
Variance
A 238,208,959 1.1158 213,487,147 45 4,194 .109284243
A 234,592,885 1.0508 223,251,699 43 2,944 .045682593
A 236,937,817 1.0813 219,123,108 55 2,156 .029646355
A 181,773,551 1.0432 174,246,119 51 1,096 .014480559
D3 115,517,255 1.0051 114,931,106 10 2,378 .022975039
F1 31,676,234 0.8993 35,223,211 8 184 .020488833
F1 36,912,189 0.8955 41,219,642 6 58 .004258685
F1 26,204,825 0.9785 26,780,608 7 21 .002048696
F1 39,193,160 0.9341 41,958,206 5 13 .009869008
L1 19,936,589 1.0509 18,970,967 7 116 .021584141
L1 17,233,984 0.9969 17,287,575 6 22 .002994578
L1 18,704,006 1.0187 18,360,662 2 6 .000873127
L1 36,149,900 1.2064 29,965,103 2 6 .001771958
Random Totals: 1,233,041,354   1,174,805,153 247 13,194  
Catg D1 Exception Values: 4,601,144   5,048,906      
Total Test Values (4): 1,237,642,498   1,179,854,059      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 58,992,703

Confidence Interval Values (5)

State Lower Limit: 1,120,861,356 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,237,642,498 (Within Confidence Interval)
State Upper Limit: 1,238,846,762 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,560,533,575 (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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