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2008 Confidence Interval Detail
222/Terrell
222-901/Terrell County ISD

Category Summary

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

Stratum
Variance
D3 11,318,051 1.0024 11,290,953 11 5,752 .009589015
G1 181,325,830 0.9730 186,357,482 10 230 .006936891
G1 180,479,900 0.9984 180,769,131 9 58 .000011830
G1 185,917,150 0.9628 193,100,488 8 26 .011750762
G1 172,968,910 0.9310 185,788,303 6 12 .033074111
Random Totals: 732,009,841   757,306,357 44 6,078  
Catg J Exception Values: 22,313,733   22,355,227      
Catg D1 Exception Values: 15,276,937   23,652,733      
Total Test Values (4): 769,600,511   803,314,317      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 40,165,716

Confidence Interval Values (5)

State Lower Limit: 763,148,601 (State Test Value minus Margin of Error Percent)
Local Test Value: 769,600,511 (Within Confidence Interval)
State Upper Limit: 843,480,033 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 872,607,682 (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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