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2008 Confidence Interval Detail
092/Gregg
092-901/Gladewater ISD

Category Summary

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

Stratum
Variance
A 27,217,790 0.9036 30,121,503 14 653 .027970419
A 23,829,740 0.9563 24,918,687 13 289 .045440454
A 26,361,900 1.0200 25,845,000 10 218 .021028348
A 25,756,110 1.0502 24,524,957 10 140 .034902281
D3 20,055,740 0.8414 23,836,154 20 867 .214602549
F1 7,329,020 0.7591 9,654,881 10 152 .063057933
F1 8,368,593 0.8734 9,581,627 9 53 .049455635
F1 8,873,530 0.9446 9,393,955 8 17 .056619870
F1 4,751,460 1.0207 4,655,099 3 3 .019998498
G1 34,157,099 0.9676 35,300,846 8 91 .003789902
G1 34,304,028 0.9748 35,190,837 6 42 .002852426
G1 35,460,150 0.9954 35,624,020 5 24 .000390558
G1 31,825,462 0.9976 31,902,027 4 10 .004851709
Random Totals: 288,290,622   300,549,593 120 2,559  
Catg J Exception Values: 10,689,837   10,307,625      
Catg D1 Exception Values: 1,613,712   1,358,842      
Total Test Values (4): 300,594,171   312,216,060      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 15,610,803

Confidence Interval Values (5)

State Lower Limit: 296,605,257 (State Test Value minus Margin of Error Percent)
Local Test Value: 300,594,171 (Within Confidence Interval)
State Upper Limit: 327,826,863 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 331,831,202 (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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