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2009 Confidence Interval Detail
246/Williamson
246-906/Hutto ISD

Category Summary

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

Stratum
Variance
A 305,342,759 0.9595 318,231,119 51 2,535 .004905902
A 201,129,417 0.9887 203,428,155 52 1,446 .005808106
A 173,216,092 1.0094 171,603,024 34 1,076 .003459450
A 237,636,906 1.0011 237,375,793 28 875 .009649550
D3 80,909,074 1.0493 77,107,666 13 1,316 .137372787
F1 40,741,324 0.9563 42,603,079 7 101 .010138631
F1 38,904,286 0.9471 41,077,274 6 31 .001809203
F1 35,531,664 0.9841 36,105,745 4 12 .010328062
L1 15,540,670 0.9832 15,806,214 7 109 .162434993
L1 19,170,576 0.9975 19,218,623 5 20 .000662382
L1 36,458,376 1.0258 35,541,408 3 5 .001232610
Random Totals: 1,184,581,144   1,198,098,100 210 7,526  
Catg D1 Exception Values: 10,364,518   7,947,153      
Catg F1 Exception Values: 24,249,787   26,828,218      
Total Test Values (4): 1,219,195,449   1,232,873,471      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 61,643,674

Confidence Interval Values (5)

State Lower Limit: 1,171,229,797 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,219,195,449 (Within Confidence Interval)
State Upper Limit: 1,294,517,145 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,374,521,427 (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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