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2007 Confidence Interval Detail
233/Val Verde
233-903/Comstock CISD

Category Summary

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

Stratum
Variance
A 3,122,507 0.9132 3,419,302 9 168 .005482083
A 3,111,509 0.9811 3,171,449 8 78 .037776709
A 3,151,293 0.9448 3,335,407 8 44 .008587317
A 3,052,326 0.9728 3,137,671 8 23 .001030237
D3 18,692,936 0.8128 22,998,199 19 4,155 .156685039
G1 19,894,922 0.9636 20,646,453 15 60 .017235091
G1 19,373,658 0.9770 19,829,742 14 19 .001767993
G1 21,666,767 1.0126 21,397,163 10 13 .004576235
G1 17,321,682 0.9721 17,818,827 5 6 .013341860
Random Totals: 109,387,600   115,754,213 96 4,566  
Catg J Exception Values: 16,255,937   16,275,674      
Catg D1 Exception Values: 17,481,539   19,293,915      
Total Test Values (4): 143,125,076   151,323,802      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,566,190

Confidence Interval Values (5)

Local Test Value: 143,125,076 (Outside Confidence Interval)
State Lower Limit: 143,757,612 (State Test Value minus Margin of Error Percent)
State Upper Limit: 158,889,992 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 162,207,173 (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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