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2010 Confidence Interval Detail
020/Brazoria
020-902/Angleton ISD

Category Summary

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

Stratum
Variance
A 208,603,987 0.9301 224,281,246 17 3,060 .015655353
A 197,768,018 0.9597 206,072,750 22 1,922 .013524375
A 194,423,087 0.9456 205,608,172 24 1,401 .008246509
A 204,659,561 0.9568 213,900,043 15 872 .002117941
C 23,902,858 0.9558 25,008,221 11 1,864 .157606545
C 29,799,553 0.9475 31,450,716 15 873 .029220391
C 8,238,580 0.9353 8,808,489 10 159 .021759472
C 14,464,720 0.9829 14,716,370 10 194 .043817368
D3 93,773,178 0.9909 94,634,351 16 4,274 .020694182
F1 39,282,322 1.0115 38,835,711 14 304 .007376127
F1 35,170,331 0.8782 40,048,202 11 97 .045070004
F1 36,261,392 1.0844 33,439,129 10 40 .013643188
F1 35,001,120 1.0158 34,456,704 6 14 .017570600
G1 6,350,790 0.8903 7,133,315 5 12 .016248862
G1 6,239,540 1.0275 6,072,545 3 5 .000682827
L1 22,658,170 0.9444 23,992,133 10 310 .051113938
L1 23,007,410 0.8938 25,741,117 8 53 .022346043
L1 16,722,670 0.9872 16,939,496 6 10 .006125127
Random Totals: 1,196,327,287   1,251,138,710 213 15,464  
Catg J Exception Values: 48,950,465   49,287,380      
Catg D1 Exception Values: 17,034,581   17,234,389      
Catg G1 Exception Values: 16,966,300   16,820,310      
Catg L1 Exception Values: 5,879,300   5,871,147      
Total Test Values (4): 1,285,157,933   1,340,351,936      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 67,017,597

Confidence Interval Values (5)

State Lower Limit: 1,273,334,339 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,285,157,933 (Within Confidence Interval)
State Upper Limit: 1,407,369,533 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,145,243,182 (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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