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2011 Confidence Interval Detail
233/Val Verde
233-901/San Felipe-Del Rio CISD

Category Summary

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

Stratum
Variance
A 263,984,310 0.9202 286,877,103 23 5,036 .062560836
A 265,130,635 0.9869 268,649,949 31 2,652 .018064329
A 261,181,431 0.9769 267,357,387 22 1,811 .004226697
A 289,474,470 0.9993 289,677,244 27 1,231 .001845049
F1 61,242,710 0.9094 67,344,084 11 460 .017286711
F1 63,909,800 0.9242 69,151,482 10 137 .020392540
F1 61,876,200 0.9656 64,080,572 9 40 .002028704
L1 26,541,240 0.9994 26,557,174 10 474 .005935192
L1 22,861,780 0.9753 23,440,767 13 89 .001939486
L1 28,867,880 1.0151 28,438,459 9 31 .016603589
Random Totals: 1,345,070,456   1,391,574,221 165 11,961  
Catg D1 Exception Values: 9,058,623   12,161,463      
Catg F1 Exception Values: 61,909,790   68,726,540      
Catg L1 Exception Values: 33,456,440   33,174,313      
Total Test Values (4): 1,449,495,309   1,505,636,537      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 75,281,827

Confidence Interval Values (5)

State Lower Limit: 1,430,354,710 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,449,495,309 (Within Confidence Interval)
State Upper Limit: 1,580,918,364 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,483,857,345 (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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