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2009 Confidence Interval Detail
108/Hidalgo
108-902/Donna ISD

Category Summary

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

Stratum
Variance
A 170,855,089 1.1819 144,559,683 9 5,200 .053361867
A 162,385,339 0.9259 175,381,077 9 2,893 .037723049
A 169,258,318 0.9902 170,933,466 24 2,005 .011291954
A 177,176,278 1.0159 174,403,266 18 1,182 .023296095
C 19,744,167 1.0886 18,137,210 21 1,271 .026488064
C 21,755,429 1.0560 20,601,732 19 952 .021562911
C 21,604,263 1.0015 21,571,905 17 546 .011401852
C 18,693,649 0.9799 19,077,099 15 133 .011603275
F1 30,109,349 1.0494 28,691,966 7 259 .027228743
F1 29,814,165 0.9919 30,057,632 7 92 .071515876
F1 27,024,169 0.7769 34,784,617 7 38 .099954357
F1 31,462,387 0.9112 34,528,520 7 15 .015041714
Random Totals: 879,882,602   872,728,173 160 14,586  
Catg D1 Exception Values: 14,390,813   15,053,249      
Total Test Values (4): 894,273,415   887,781,422      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 44,389,071

Confidence Interval Values (5)

State Lower Limit: 843,392,351 (State Test Value minus Margin of Error Percent)
Local Test Value: 894,273,415 (Within Confidence Interval)
State Upper Limit: 932,170,493 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 953,958,184 (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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