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2011 Confidence Interval Detail
122/Jeff Davis
122-902/Valentine ISD

Category Summary

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

Stratum
Variance
A 1,108,290 0.9078 1,220,853 13 53 .011717081
A 1,465,640 0.9175 1,597,428 12 20 .003609859
A 1,227,340 0.9762 1,257,263 7 9 .008530415
A 1,047,320 1.0002 1,047,111 3 4 .009631303
C 2,394,830 0.9702 2,468,388 10 1,288 .002433155
C 10,200 0.9651 10,569 3 5 .000002089
C 664,860 0.9371 709,487 10 226 .001886563
C 973,970 0.8795 1,107,413 10 141 .049091244
D3 9,447,540 0.9601 9,840,162 26 1,618 .016608588
Random Totals: 18,339,990   19,258,674 94 3,364  
Catg J Exception Values: 11,652,793   11,796,536      
Catg D1 Exception Values: 7,237,080   6,998,346      
Total Test Values (4): 37,229,863   38,053,556      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 1,902,678

Confidence Interval Values (5)

State Lower Limit: 36,150,878 (State Test Value minus Margin of Error Percent)
Local Test Value: 37,229,863 (Within Confidence Interval)
State Upper Limit: 39,956,234 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 38,068,995 (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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