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2006 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 432,533,401 1.0099 428,293,297 48 6,438 .031144833
A 432,185,728 0.9719 444,681,272 50 3,871 .004941422
A 432,503,705 0.9813 440,745,649 50 2,660 .003165170
A 432,192,153 0.9908 436,205,241 49 1,520 .005947716
F1 90,082,936 0.8226 109,510,012 22 614 .211918094
F1 90,053,771 0.8321 108,224,698 9 179 .096239262
F1 90,287,507 0.8542 105,698,322 6 68 .010445989
F1 88,984,569 1.0241 86,890,508 5 18 .005920975
L1 60,343,460 1.0575 57,062,374 8 696 .007026068
L1 60,519,297 0.9970 60,701,401 9 157 .006106959
L1 60,886,765 1.0100 60,283,926 8 49 .001694986
L1 59,584,711 0.9415 63,287,001 5 13 .006549074
Random Totals: 2,330,158,003   2,401,583,701 269 16,283  
Catg D1 Exception Values: 2,410,020   2,664,839      
Total Test Values (4): 2,332,568,023   2,404,248,540      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 120,212,427

Confidence Interval Values (5)

State Lower Limit: 2,284,036,113 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,332,568,023 (Within Confidence Interval)
State Upper Limit: 2,524,460,967 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,739,625,289 (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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