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2008 Confidence Interval Detail
020/Brazoria
020-905/Brazosport ISD

Category Summary

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

Stratum
Variance
A 438,502,766 1.0549 415,681,833 49 5,990 .023661752
A 475,188,157 1.0005 474,950,682 50 4,052 .004065876
A 493,280,914 1.0052 490,729,123 48 2,969 .004329092
A 516,957,394 0.9863 524,138,086 49 1,810 .002428778
F1 92,246,951 0.9277 99,436,187 11 595 .035696813
F1 98,003,140 0.8106 120,901,974 10 184 .060704721
F1 85,255,529 0.8360 101,980,298 10 64 .033734224
F1 113,126,669 0.9126 123,960,847 10 26 .029132964
L1 65,910,990 0.9755 67,566,366 7 671 .009802955
L1 67,213,710 0.9692 69,349,680 8 145 .029245279
L1 67,510,560 0.8647 78,073,968 6 46 .043569972
L1 67,203,520 0.8933 75,230,628 5 15 .022688031
Random Totals: 2,580,400,300   2,641,999,672 263 16,567  
Catg D1 Exception Values: 2,264,710   2,446,025      
Total Test Values (4): 2,582,665,010   2,644,445,697      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 132,222,285

Confidence Interval Values (5)

State Lower Limit: 2,512,223,412 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,582,665,010 (Within Confidence Interval)
State Upper Limit: 2,776,667,982 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,484,584,692 (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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