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2009 Confidence Interval Detail
227/Travis
227-912/Lago Vista ISD

Category Summary

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

Stratum
Variance
A 289,300,731 0.9700 298,248,176 41 1,803 .025971554
A 252,845,337 1.0283 245,886,742 30 1,026 .015283507
A 273,530,893 0.9941 275,154,303 17 689 .013600911
A 310,670,302 0.9353 332,161,127 15 323 .008528894
C 46,753,726 1.0772 43,403,013 16 3,792 .031865517
C 50,071,587 1.0110 49,526,792 34 2,123 .016616225
C 55,499,342 0.9372 59,218,248 15 476 .014527767
C 73,205,449 0.9358 78,227,665 14 188 .015271044
Random Totals: 1,351,877,367   1,381,826,066 182 10,420  
Catg D1 Exception Values: 237,921   147,736      
Total Test Values (4): 1,352,115,288   1,381,973,802      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 69,098,690

Confidence Interval Values (5)

State Lower Limit: 1,312,875,112 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,352,115,288 (Within Confidence Interval)
State Upper Limit: 1,451,072,492 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,472,491,727 (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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