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2010 Confidence Interval Detail
227/Travis
011-902/Elgin ISD

Category Summary

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

Stratum
Variance
A 47,847,659 0.9464 50,557,543 12 477 .006047497
A 27,280,725 1.0091 27,034,709 11 221 .003812257
A 22,018,908 0.9740 22,606,682 11 150 .002196128
A 21,170,429 1.0036 21,094,489 11 90 .009920411
D3 25,420,348 0.9714 26,168,775 15 853 .006566756
Random Totals: 143,738,069   147,462,198 60 1,791  
Catg J Exception Values: 2,598,828   2,882,512      
Catg D1 Exception Values: 5,014,753   6,705,475      
Total Test Values (4): 151,351,650   157,050,185      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,852,509

Confidence Interval Values (5)

State Lower Limit: 149,197,676 (State Test Value minus Margin of Error Percent)
Local Test Value: 151,351,650 (Within Confidence Interval)
State Upper Limit: 164,902,694 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 168,300,393 (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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