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2010 Confidence Interval Detail
230/Upshur
230-901/Big Sandy ISD

Category Summary

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

Stratum
Variance
A 15,965,190 0.9761 16,356,101 10 316 .023203133
A 14,645,650 1.0258 14,277,296 9 166 .007206536
A 15,194,600 0.9630 15,778,401 10 120 .002668249
A 15,571,220 0.9940 15,665,211 9 79 .024505708
D3 61,275,018 1.1024 55,583,289 20 2,191 .022311478
F1 2,858,410 0.9458 3,022,214 8 47 .008043393
F1 2,761,730 1.0816 2,553,375 6 17 .024449907
F1 3,056,260 1.0204 2,995,159 6 9 .018053748
Random Totals: 131,328,078   126,231,046 78 2,945  
Catg J Exception Values: 11,920,614   12,176,424      
Catg D1 Exception Values: 3,652,869   3,507,297      
Catg F1 Exception Values: 2,359,730   2,305,943      
Total Test Values (4): 149,261,291   144,220,710      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 7,211,036

Confidence Interval Values (5)

State Lower Limit: 137,009,674 (State Test Value minus Margin of Error Percent)
Local Test Value: 149,261,291 (Within Confidence Interval)
State Upper Limit: 151,431,746 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 152,149,795 (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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