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2008 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 94,150,959 0.9447 99,662,283 28 802 .008867797
A 92,341,336 1.0096 91,463,288 20 410 .006961700
A 82,238,002 0.9558 86,041,015 17 227 .019333634
A 125,886,032 0.9678 130,074,429 14 218 .004605892
D3 141,941,084 1.0295 137,873,807 36 3,867 .157548496
Random Totals: 536,557,413   545,114,822 115 5,524  
Catg D1 Exception Values: 5,542,646   5,640,527      
Total Test Values (4): 542,100,059   550,755,349      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 27,537,767

Confidence Interval Values (5)

State Lower Limit: 523,217,582 (State Test Value minus Margin of Error Percent)
Local Test Value: 542,100,059 (Within Confidence Interval)
State Upper Limit: 578,293,116 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 547,833,546 (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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