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2008 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 214,744,441 0.9692 221,568,759 59 1,475 .027740714
A 256,671,883 1.0043 255,572,919 62 1,147 .012566378
A 324,860,138 0.9657 336,398,610 41 932 .009258617
A 309,979,890 0.9772 317,212,331 21 365 .007481550
C 49,928,510 0.9959 50,134,060 58 4,035 .170783530
C 49,352,359 0.8337 59,196,784 58 2,008 1.040426605
C 46,566,994 0.8268 56,321,957 27 400 .125173875
C 48,553,468 0.9537 50,910,630 15 143 .017661395
D3 59,004,887 0.4111 143,529,280 10 473 1.121008414
Random Totals: 1,359,662,570   1,490,845,330 351 10,978  
Catg D1 Exception Values: 235,039   165,226      
Total Test Values (4): 1,359,897,609   1,491,010,556      

Margin of Error

Margin of Error Percent: 6.4908901
Margin of Error Value: 96,779,856

Confidence Interval Values (5)

Local Test Value: 1,359,897,609 (Outside Confidence Interval)
State Lower Limit: 1,394,230,700 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,587,790,412 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,352,423,550 (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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