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2009 Confidence Interval Detail
227/Travis
246-913/Leander ISD

Category Summary

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

Stratum
Variance
A 1,092,008,946 1.0188 1,071,858,015 64 4,141 .006171599
A 1,071,132,354 1.0008 1,070,276,133 62 2,869 .006758742
A 1,123,498,252 1.0070 1,115,688,433 62 2,181 .006900347
A 1,186,868,510 0.9822 1,208,377,632 51 1,232 .006306633
B 390,106,539 0.9711 401,716,135 7 30 .005647170
F1 69,149,555 0.9631 71,798,936 7 96 .001566657
F1 60,817,439 0.9935 61,215,339 6 32 .003543839
F1 80,732,393 1.0014 80,619,526 6 16 .003843519
F1 84,598,425 0.9824 86,114,032 3 6 .001124012
Random Totals: 5,158,912,413   5,167,664,181 268 10,603  
Catg D1 Exception Values: 1,530,030   957,266      
Catg F1 Exception Values: 95,000,000   92,000,000      
Total Test Values (4): 5,255,442,443   5,260,621,447      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 263,031,072

Confidence Interval Values (5)

State Lower Limit: 4,997,590,375 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,255,442,443 (Within Confidence Interval)
State Upper Limit: 5,523,652,519 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,774,366,334 (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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