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2006 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 197,475,242 0.9915 199,168,171 65 1,290 .001746334
A 197,409,099 0.9944 198,520,816 67 869 .001871902
A 197,487,728 0.9917 199,140,595 62 600 .003695319
A 197,369,053 0.9774 201,932,733 25 246 .001288959
C 49,292,540 1.1278 43,706,810 59 5,423 .069380639
C 28,634,125 1.0365 27,625,784 60 1,245 .027069757
C 39,084,374 1.0263 38,082,796 40 482 .008192491
C 38,839,952 1.0009 38,805,027 47 158 .001697055
D3 63,811,020 0.9942 64,183,283 20 561 .011686019
Random Totals: 1,009,403,133   1,011,166,015 445 10,874  
Catg D1 Exception Values: 232,623   262,436      
Total Test Values (4): 1,009,635,756   1,011,428,451      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 50,571,423

Confidence Interval Values (5)

State Lower Limit: 960,857,028 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,009,635,756 (Within Confidence Interval)
State Upper Limit: 1,061,999,874 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,000,498,179 (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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