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2007 Confidence Interval Detail
174/Nacogdoches
174-908/Central Heights ISD

Category Summary

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

Stratum
Variance
A 8,102,108 0.9258 8,751,467 8 225 .008690160
A 8,063,406 0.9049 8,910,826 8 115 .004942031
A 8,087,496 0.9056 8,930,539 7 66 .010248053
A 8,014,962 1.0142 7,902,743 6 37 .041661709
D3 38,361,681 0.8808 43,553,225 20 1,668 .027396496
G1 6,307,041 1.0275 6,138,239 6 31 .039782504
G1 5,886,603 1.0242 5,747,513 4 9 .002428206
G1 6,767,080 1.1360 5,956,937 3 5 .021604205
Random Totals: 89,590,377   95,891,489 62 2,156  
Catg D1 Exception Values: 7,708,541   7,802,665      
Catg G1 Exception Values: 5,293,970   4,932,904      
Total Test Values (4): 102,592,888   108,627,058      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 5,431,353

Confidence Interval Values (5)

Local Test Value: 102,592,888 (Outside Confidence Interval)
State Lower Limit: 103,195,705 (State Test Value minus Margin of Error Percent)
State Upper Limit: 114,058,411 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 98,124,202 (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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