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2009 Confidence Interval Detail
239/Washington
239-901/Brenham ISD

Category Summary

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

Stratum
Variance
A 193,181,909 0.9587 201,504,025 53 2,516 .039077828
A 197,348,935 0.9396 210,035,052 35 1,634 .019033961
A 197,329,600 0.9639 204,719,992 43 1,163 .014674754
A 201,437,450 0.9552 210,885,103 15 726 .005393781
D3 595,118,592 0.9495 626,770,502 40 11,044 .036067524
F1 50,843,679 0.9400 54,089,020 8 386 .138257591
F1 58,822,338 0.9255 63,557,361 7 149 .029030319
F1 50,204,340 0.9331 53,803,815 6 42 .044950935
F1 52,760,990 0.9357 56,386,652 4 11 .001983548
G1 23,751,836 0.9957 23,854,410 6 44 .036140102
G1 23,372,650 0.9906 23,594,438 5 17 .004881366
G1 26,517,475 0.9753 27,189,044 4 9 .008864034
G1 20,545,190 0.9596 21,410,160 3 4 .005919881
L1 29,566,180 0.9943 29,735,673 7 502 .011384134
L1 27,791,275 0.9738 28,538,997 7 92 .007906777
L1 30,379,600 1.0104 30,066,904 6 36 .038037325
L1 34,170,775 1.1669 29,283,379 4 11 .026862472
Random Totals: 1,813,142,814   1,895,424,527 253 18,386  
Catg D1 Exception Values: 23,694,262   22,224,499      
Total Test Values (4): 1,836,837,076   1,917,649,026      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 95,882,451

Confidence Interval Values (5)

State Lower Limit: 1,821,766,575 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,836,837,076 (Within Confidence Interval)
State Upper Limit: 2,013,531,477 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,002,302,249 (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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