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2009 Confidence Interval Detail
015/Bexar
163-908/Medina Valley ISD

Category Summary

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

Stratum
Variance
A 26,599,357 0.9163 29,029,092 9 391 .033141635
A 26,335,980 0.9505 27,707,501 9 179 .000998810
A 30,666,320 0.9501 32,276,939 16 164 .007587895
A 28,724,076 1.0094 28,456,584 7 63 .012987725
C 3,816,150 1.1301 3,376,825 8 133 .064256283
C 3,271,700 0.9734 3,361,105 6 23 .014491774
C 3,997,480 1.0153 3,937,240 5 17 .003645901
C 2,337,320 1.0994 2,125,996 4 7 .045390214
D3 38,443,675 1.0705 35,911,887 14 396 .068698674
F1 5,261,305 0.8895 5,914,902 5 22 .011526482
F1 10,303,600 0.8662 11,895,174 4 7 .032009439
Random Totals: 179,756,963   183,993,245 87 1,402  
Catg D1 Exception Values: 2,569,449   2,787,719      
Catg F1 Exception Values: 5,976,700   6,066,540      
Total Test Values (4): 188,303,112   192,847,504      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,642,375

Confidence Interval Values (5)

State Lower Limit: 183,205,129 (State Test Value minus Margin of Error Percent)
Local Test Value: 188,303,112 (Within Confidence Interval)
State Upper Limit: 202,489,879 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 200,043,392 (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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