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2009 Confidence Interval Detail
021/Brazos
021-902/Bryan ISD

Category Summary

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

Stratum
Variance
A 512,488,990 0.9169 558,936,623 54 7,004 .021694407
A 543,533,760 0.9368 580,202,562 59 4,578 .014603465
A 554,499,030 0.9625 576,102,888 54 3,367 .009636454
A 593,362,063 0.9425 629,561,871 61 2,025 .009300308
B 87,520,038 1.1048 79,217,992 20 791 .014984560
B 88,608,069 1.0350 85,611,661 7 187 .001899993
B 70,134,768 0.8861 79,149,947 4 11 .008851003
B 118,940,191 0.8782 135,436,337 4 7 .002317153
D3 345,094,156 0.9189 375,551,372 11 6,602 .045836276
F1 179,462,340 1.0224 175,530,458 20 781 .016109223
F1 184,525,370 1.0343 178,406,043 10 241 .056131393
F1 179,050,560 1.1295 158,521,965 6 89 .033558244
F1 202,380,973 1.0875 186,097,446 9 34 .036274119
L1 108,989,530 1.0267 106,155,187 7 1,182 .002895814
L1 109,549,662 1.0044 109,069,755 7 181 .012784465
L1 122,398,160 1.0565 115,852,494 6 66 .035031818
L1 110,733,050 1.0210 108,455,485 4 15 .002236693
Random Totals: 4,111,270,710   4,237,860,086 343 27,161  
Catg D1 Exception Values: 20,923,685   15,824,556      
Total Test Values (4): 4,132,194,395   4,253,684,642      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 212,684,232

Confidence Interval Values (5)

State Lower Limit: 4,041,000,410 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,132,194,395 (Within Confidence Interval)
State Upper Limit: 4,466,368,874 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,561,822,769 (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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