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2009 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 232,744,340 0.9113 255,398,156 22 5,051 .161562246
A 224,754,290 0.9520 236,086,439 18 2,486 .021440654
A 247,875,970 0.9584 258,635,194 28 1,900 .011595784
A 257,239,210 0.9666 266,127,881 28 1,208 .017607265
F1 60,431,258 0.9560 63,212,613 16 485 .027106150
F1 57,224,380 0.9822 58,261,434 14 134 .000082254
F1 64,246,660 0.9572 67,119,369 15 50 .002091810
L1 36,639,540 1.1338 32,315,699 7 424 .025836447
L1 29,630,140 1.0414 28,452,218 6 54 .006282841
L1 33,589,400 0.9947 33,768,372 6 11 .000379554
L1 9,103,170 1.0523 8,650,736 2 1 .005872332
Random Totals: 1,253,478,358   1,308,028,111 162 11,804  
Catg D1 Exception Values: 8,830,069   10,788,333      
Catg F1 Exception Values: 58,118,810   58,041,903      
Total Test Values (4): 1,320,427,237   1,376,858,347      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 68,842,917

Confidence Interval Values (5)

State Lower Limit: 1,308,015,430 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,320,427,237 (Within Confidence Interval)
State Upper Limit: 1,445,701,264 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,358,826,450 (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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