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2006 Confidence Interval Detail
237/Waller
237-904/Waller ISD

Category Summary

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

Stratum
Variance
A 140,290,062 1.0263 136,694,984 26 2,305 .028461505
A 140,185,777 1.0019 139,919,929 35 1,453 .015084307
A 140,389,948 1.0085 139,206,691 29 1,004 .019475696
A 140,063,309 0.9666 144,903,072 19 609 .007823701
D3 430,938,427 0.9885 435,951,874 46 10,972 .026089278
F1 20,465,877 0.9966 20,535,698 9 222 .010701517
F1 20,891,064 0.8948 23,347,188 8 63 .083759324
F1 21,197,134 1.0003 21,190,777 6 23 .013678590
F1 19,219,224 0.8573 22,418,318 5 9 .083638657
Random Totals: 1,073,640,822   1,084,168,531 183 16,660  
Catg D1 Exception Values: 23,632,421   23,155,066      
Total Test Values (4): 1,097,273,243   1,107,323,597      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 55,366,180

Confidence Interval Values (5)

State Lower Limit: 1,051,957,417 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,097,273,243 (Within Confidence Interval)
State Upper Limit: 1,162,689,777 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,235,209,506 (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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