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2009 Confidence Interval Detail
174/Nacogdoches
174-903/Garrison ISD

Category Summary

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

Stratum
Variance
A 6,924,590 0.8941 7,744,760 7 192 .049662264
A 8,466,020 1.0577 8,004,179 7 131 .019882064
A 8,599,800 0.9579 8,977,764 6 88 .047801587
A 10,069,800 0.9325 10,798,713 7 61 .004478693
D3 31,273,770 1.0542 29,665,879 22 1,590 .024784053
G1 34,066,730 0.9744 34,961,751 14 148 .043051393
G1 33,870,940 0.9836 34,435,685 11 58 .019100690
G1 34,689,500 0.9982 34,752,054 9 29 .015397554
G1 32,910,010 1.0033 32,801,764 6 15 .004394216
Random Totals: 200,871,160   202,142,549 89 2,312  
Catg J Exception Values: 7,988,300   9,448,737      
Catg D1 Exception Values: 10,005,890   5,795,384      
Total Test Values (4): 218,865,350   217,386,670      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 10,869,334

Confidence Interval Values (5)

State Lower Limit: 206,517,336 (State Test Value minus Margin of Error Percent)
Local Test Value: 218,865,350 (Within Confidence Interval)
State Upper Limit: 228,256,004 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 267,074,640 (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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