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2006 Confidence Interval Detail
049/Cooke
049-905/Callisburg ISD

Category Summary

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

Stratum
Variance
A 87,525,704 0.9214 94,992,082 27 757 .024181505
A 87,530,880 1.0214 85,696,965 35 396 .006168318
A 87,407,390 1.0950 79,824,100 12 269 .019272749
A 87,437,056 1.0683 81,846,912 23 170 .008509392
D3 125,282,607 0.9494 131,959,771 43 3,786 .065057553
Random Totals: 475,183,637   474,319,830 140 5,378  
Catg D1 Exception Values: 5,498,582   5,335,785      
Total Test Values (4): 480,682,219   479,655,615      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 23,982,781

Confidence Interval Values (5)

State Lower Limit: 455,672,834 (State Test Value minus Margin of Error Percent)
Local Test Value: 480,682,219 (Within Confidence Interval)
State Upper Limit: 503,638,396 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 469,100,257 (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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