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2009 Confidence Interval Detail
246/Williamson
246-908/Liberty Hill ISD

Category Summary

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

Stratum
Variance
A 159,157,080 0.9680 164,418,471 28 1,140 .011069953
A 173,255,787 0.9833 176,198,299 34 676 .003272709
A 191,997,600 1.0092 190,247,325 16 541 .010450491
A 173,087,012 0.9677 178,864,330 9 288 .007318281
C 11,673,623 0.9632 12,119,625 9 315 .052721838
C 26,435,198 0.9875 26,769,821 9 326 .006169277
C 24,536,095 0.8881 27,627,626 8 138 .050029673
C 17,969,201 1.0222 17,578,948 7 42 .003957528
D3 127,945,417 0.9608 133,165,505 11 1,958 .015675150
F1 18,805,964 1.0185 18,464,373 6 80 .006789190
F1 17,027,539 0.9767 17,433,745 7 34 .019948837
F1 21,183,819 0.9279 22,829,851 5 26 .014028522
F1 20,649,020 0.9424 21,911,099 4 13 .024348410
Random Totals: 983,723,355   1,007,629,018 153 5,577  
Catg D1 Exception Values: 2,954,958   2,155,563      
Total Test Values (4): 986,678,313   1,009,784,581      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 50,489,229

Confidence Interval Values (5)

State Lower Limit: 959,295,352 (State Test Value minus Margin of Error Percent)
Local Test Value: 986,678,313 (Within Confidence Interval)
State Upper Limit: 1,060,273,810 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,024,249,399 (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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