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2007 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 6,130,946 1.0119 6,058,846 11 287 .013244969
A 6,129,073 0.9465 6,475,513 8 161 .059420696
A 6,122,809 0.9662 6,337,000 9 101 .002994680
A 6,047,190 0.9966 6,067,821 10 55 .005696131
D3 24,989,060 1.1559 21,618,704 21 2,509 .029433795
F1 2,177,109 1.0277 2,118,429 7 58 .001691389
F1 2,303,557 0.8796 2,618,869 7 17 .021869987
G1 1,477,342 1.0643 1,388,088 6 54 .047883827
G1 1,422,976 0.3805 3,739,753 5 15 1.548104324
G1 1,665,233 1.0520 1,582,921 4 7 .038755340
L1 516,099 0.9625 536,207 9 29 .002720232
L1 543,968 0.8590 633,257 7 10 .082483462
L1 610,774 0.9319 655,407 4 6 .007125464
L1 3,021,809 0.9560 3,160,888 2 4 .001985245
Random Totals: 63,157,945   62,991,703 110 3,313  
Catg J Exception Values: 10,340,970   11,865,361      
Catg D1 Exception Values: 10,908,170   7,505,976      
Catg F1 Exception Values: 2,846,930   2,923,269      
Catg G1 Exception Values: 1,181,807   1,139,974      
Total Test Values (4): 88,435,822   86,426,283      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,321,314

Confidence Interval Values (5)

State Lower Limit: 82,104,969 (State Test Value minus Margin of Error Percent)
Local Test Value: 88,435,822 (Within Confidence Interval)
State Upper Limit: 90,747,597 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 89,632,172 (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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