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2007 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 469,383,213 1.0247 458,068,911 28 6,410 .025232395
A 469,122,951 1.0042 467,160,875 25 3,929 .006998841
A 469,275,891 1.0110 464,170,021 26 2,731 .008038056
A 469,205,874 1.0151 462,226,258 27 1,573 .022337595
F1 92,113,566 0.9324 98,791,898 12 605 .051878380
F1 92,407,929 0.7755 119,159,161 9 171 .296552428
F1 91,931,228 0.6240 147,325,686 8 63 .091180382
F1 90,934,202 0.9835 92,459,789 5 17 .003348775
L1 64,408,091 0.9692 66,454,902 10 695 .053459541
L1 64,822,685 0.9761 66,409,881 7 155 .010642795
L1 65,540,986 0.9427 69,524,754 7 43 .017823304
L1 62,577,644 0.9565 65,423,569 6 14 .003562934
Random Totals: 2,501,724,260   2,577,175,705 170 16,406  
Catg D1 Exception Values: 2,320,150   2,444,142      
Total Test Values (4): 2,504,044,410   2,579,619,847      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 128,980,992

Confidence Interval Values (5)

State Lower Limit: 2,450,638,855 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,504,044,410 (Within Confidence Interval)
State Upper Limit: 2,708,600,839 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,051,780,124 (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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