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2008 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 150,664,739 0.9588 157,138,860 44 1,192 .008063379
A 143,320,002 0.9845 145,576,437 38 609 .005094031
A 157,216,502 0.9877 159,174,346 40 487 .003153224
A 226,221,347 0.9692 233,410,387 23 435 .017180153
C 19,355,281 0.8642 22,396,761 14 525 .069634639
C 19,028,175 0.9376 20,294,555 12 273 .050525844
C 15,203,727 0.9478 16,041,071 8 105 .077822619
C 30,565,669 0.9126 33,492,953 6 105 .010825600
D3 115,662,203 0.9750 118,627,901 14 2,136 .003806782
F1 18,166,496 1.0404 17,461,069 7 83 .011201849
F1 13,489,826 0.9836 13,714,748 6 29 .020662597
F1 20,025,529 0.9956 20,114,031 5 27 .002392829
F1 22,795,928 0.9709 23,479,172 4 15 .004453441
Random Totals: 951,715,424   980,922,291 221 6,021  
Catg D1 Exception Values: 3,132,775   2,145,995      
Total Test Values (4): 954,848,199   983,068,286      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 49,153,414

Confidence Interval Values (5)

State Lower Limit: 933,914,872 (State Test Value minus Margin of Error Percent)
Local Test Value: 954,848,199 (Within Confidence Interval)
State Upper Limit: 1,032,221,700 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 949,458,586 (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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