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2009 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 11,868,243 0.8959 13,247,285 11 5,680 .025895547
G1 149,166,739 0.9983 149,420,754 15 238 .012222102
G1 148,751,916 1.0489 141,817,062 15 55 .004664488
G1 154,517,374 1.0303 149,973,186 15 25 .001898189
G1 142,034,772 0.9973 142,419,304 9 12 .002207825
Random Totals: 606,339,044   596,877,591 65 6,010  
Catg J Exception Values: 23,978,020   24,637,831      
Catg D1 Exception Values: 15,824,420   24,067,306      
Total Test Values (4): 646,141,484   645,582,728      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 32,279,136

Confidence Interval Values (5)

State Lower Limit: 613,303,592 (State Test Value minus Margin of Error Percent)
Local Test Value: 646,141,484 (Within Confidence Interval)
State Upper Limit: 677,861,864 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 766,698,662 (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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