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2008 Confidence Interval Detail
209/Shackelford
209-901/Albany ISD

Category Summary

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

Stratum
Variance
A 9,150,308 0.9398 9,736,442 7 306 .012707312
A 13,283,736 1.0666 12,454,281 9 227 .030061643
A 13,721,973 0.9852 13,928,109 8 151 .029236260
A 19,401,395 0.9897 19,603,309 13 127 .019436447
D3 25,658,005 0.8582 29,897,466 19 2,532 .002526336
G1 19,250,470 1.0648 18,078,954 7 129 .002804159
G1 19,187,810 1.0426 18,403,808 6 41 .018196988
G1 19,467,660 0.9849 19,766,129 5 15 .003601668
G1 18,573,410 1.0034 18,510,474 4 7 .011704301
Random Totals: 157,694,767   160,378,972 78 3,535  
Catg J Exception Values: 3,938,040   3,703,963      
Catg D1 Exception Values: 18,687,858   19,281,915      
Total Test Values (4): 180,320,665   183,364,850      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 9,168,243

Confidence Interval Values (5)

State Lower Limit: 174,196,607 (State Test Value minus Margin of Error Percent)
Local Test Value: 180,320,665 (Within Confidence Interval)
State Upper Limit: 192,533,093 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 259,864,708 (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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