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2009 Confidence Interval Detail
015/Bexar
015-907/San Antonio ISD

Category Summary

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

Stratum
Variance
A 1,569,690,352 1.0422 1,506,131,599 66 30,070 .070627538
A 1,341,535,519 0.9838 1,363,626,264 70 18,381 .027429496
A 1,315,040,160 1.0023 1,312,022,508 70 13,062 .028161981
A 1,591,889,255 1.0376 1,534,203,214 69 6,279 .028599462
B 190,855,503 1.0508 181,628,762 25 2,080 .044661624
B 192,300,352 1.1087 173,446,696 16 911 .046976393
B 181,767,253 1.0394 174,877,095 7 209 .028555136
B 214,225,059 1.0033 213,520,442 6 45 .009760705
F1 1,091,947,255 0.9768 1,117,882,120 17 3,130 .007250003
F1 1,096,806,584 0.9238 1,187,277,099 7 452 .014395119
F1 1,142,715,846 0.8497 1,344,846,235 6 87 .004365379
F1 1,054,470,619 0.9797 1,076,319,913 5 16 .015369249
L1 330,820,650 1.0583 312,596,286 7 2,085 .005415393
L1 354,176,979 1.1885 298,003,348 7 352 .093193583
L1 291,831,138 1.0438 279,585,302 7 95 .031365290
L1 423,512,838 1.0681 396,510,475 6 38 .001862909
Random Totals: 12,383,585,362   12,472,477,358 391 77,292  
Catg D1 Exception Values: 180,378   209,394      
Total Test Values (4): 12,383,765,740   12,472,686,752      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 623,634,338

Confidence Interval Values (5)

State Lower Limit: 11,849,052,414 (State Test Value minus Margin of Error Percent)
Local Test Value: 12,383,765,740 (Within Confidence Interval)
State Upper Limit: 13,096,321,090 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 12,183,499,751 (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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