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2008 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 14,031,040 1.0425 13,459,031 11 282 .009456083
A 15,277,160 1.0898 14,018,315 10 179 .030003109
A 12,961,630 1.0125 12,801,610 10 107 .006761575
A 18,543,590 1.0634 17,438,020 10 99 .006210057
D3 55,683,263 0.9644 57,738,763 20 2,128 .021619044
F1 2,406,760 0.8989 2,677,450 6 40 .086861027
F1 4,933,880 0.9859 5,004,443 5 25 .046308943
F1 3,357,840 0.9548 3,516,799 3 6 .042222426
G1 4,100,006 0.8142 5,035,625 5 19 .096675553
Random Totals: 131,295,169   131,690,056 80 2,885  
Catg J Exception Values: 9,926,646   11,132,991      
Catg D1 Exception Values: 3,830,347   3,554,986      
Catg G1 Exception Values: 2,877,931   2,309,512      
Total Test Values (4): 147,930,093   148,687,545      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,434,377

Confidence Interval Values (5)

State Lower Limit: 141,253,168 (State Test Value minus Margin of Error Percent)
Local Test Value: 147,930,093 (Within Confidence Interval)
State Upper Limit: 156,121,922 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 147,055,772 (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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