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2008 Confidence Interval Detail
030/Callahan
030-903/Baird ISD

Category Summary

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

Stratum
Variance
A 5,273,020 0.9880 5,337,065 13 251 .025714856
A 6,253,770 0.9766 6,403,615 10 160 .002350662
A 6,837,470 1.0238 6,678,521 13 111 .050456985
A 9,077,590 0.9643 9,413,658 13 78 .001212251
D3 29,658,450 0.9755 30,403,332 24 2,525 .025857610
F1 1,390,170 0.9787 1,420,425 10 60 .009761463
F1 1,546,870 1.0242 1,510,320 6 17 .005328288
G1 1,876,013 0.6706 2,797,514 15 54 .675209655
G1 1,858,197 0.7686 2,417,639 10 13 .393282691
Random Totals: 63,771,550   66,382,089 114 3,269  
Catg J Exception Values: 11,694,952   13,871,846      
Catg D1 Exception Values: 11,073,340   11,097,549      
Catg F1 Exception Values: 5,696,300   5,792,347      
Catg G1 Exception Values: 3,534,293   3,841,669      
Total Test Values (4): 95,770,435   100,985,500      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,049,275

Confidence Interval Values (5)

Local Test Value: 95,770,435 (Outside Confidence Interval)
State Lower Limit: 95,936,225 (State Test Value minus Margin of Error Percent)
State Upper Limit: 106,034,775 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 96,787,251 (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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