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2009 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 6,413,210 1.1432 5,609,876 15 273 .082322841
A 7,378,780 0.9855 7,487,347 13 163 .010412411
A 7,344,720 0.9421 7,796,115 10 101 .029300025
A 7,747,720 0.9474 8,177,876 8 57 .019112193
D3 30,441,540 1.0271 29,638,341 28 2,455 .463976694
F1 1,418,170 1.0534 1,346,279 8 60 .124536694
F1 1,621,550 0.8898 1,822,376 7 18 .053012092
G1 1,211,466 1.0854 1,116,147 15 68 .130968952
G1 1,307,900 1.1659 1,121,794 9 16 .027526621
G1 1,452,586 0.8204 1,770,583 3 4 .124102923
L1 608,480 0.9301 654,209 8 28 .010181360
L1 565,600 0.9662 585,386 8 10 .001997637
L1 731,590 0.9743 750,888 3 4 .000616627
Random Totals: 68,243,312   67,877,217 135 3,257  
Catg J Exception Values: 15,534,180   15,658,217      
Catg D1 Exception Values: 11,165,460   11,005,079      
Catg F1 Exception Values: 5,634,850   5,915,475      
Catg G1 Exception Values: 722,150   681,835      
Catg L1 Exception Values: 2,261,000   2,334,759      
Total Test Values (4): 103,560,952   103,472,582      

Margin of Error

Margin of Error Percent: 7.3303970
Margin of Error Value: 7,584,951

Confidence Interval Values (5)

State Lower Limit: 95,887,631 (State Test Value minus Margin of Error Percent)
Local Test Value: 103,560,952 (Within Confidence Interval)
State Upper Limit: 111,057,533 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 102,633,214 (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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