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2011 Confidence Interval Detail
122/Jeff Davis
122-901/Fort Davis ISD

Category Summary

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

Stratum
Variance
A 23,508,200 0.9193 25,571,848 13 388 .016655318
A 21,881,690 0.9339 23,430,442 14 195 .031384170
A 21,854,780 0.9128 23,942,572 16 129 .023348861
A 21,967,950 1.0365 21,194,356 13 72 .006006841
C 3,983,830 0.7272 5,478,314 10 318 .021193322
C 4,207,600 0.7775 5,411,704 12 181 .028540425
C 4,419,800 0.9483 4,660,761 11 98 .040545143
C 3,744,790 0.8868 4,222,812 10 33 .022260955
D3 24,667,520 0.9786 25,206,949 25 2,504 .001249463
F1 3,701,150 0.9977 3,709,682 8 35 .016571417
F1 3,468,180 0.8810 3,936,640 10 16 .100663584
F1 4,318,110 0.7155 6,035,094 5 11 .134250216
F1 2,501,050 0.9941 2,515,894 3 3 .004870400
Random Totals: 144,224,650   155,317,068 150 3,983  
Catg D1 Exception Values: 13,368,460   12,935,291      
Total Test Values (4): 157,593,110   168,252,359      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,412,618

Confidence Interval Values (5)

Local Test Value: 157,593,110 (Outside Confidence Interval)
State Lower Limit: 159,839,741 (State Test Value minus Margin of Error Percent)
State Upper Limit: 176,664,977 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 175,480,374 (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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