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2007 Confidence Interval Detail
031/Cameron
031-903/Harlingen ISD

Category Summary

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

Stratum
Variance
A 403,671,710 0.8772 460,182,068 45 8,202 .061395375
A 402,078,864 0.9770 411,544,385 42 4,478 .017120346
A 402,938,790 0.9926 405,942,766 47 2,997 .012919326
A 402,678,625 0.9682 415,904,384 54 1,667 .027605904
F1 151,154,283 0.9457 159,833,227 13 904 .029540560
F1 151,398,113 0.9866 153,454,402 8 273 .009598006
F1 151,253,340 0.9259 163,358,181 6 88 .015945633
F1 150,045,779 0.9661 155,310,816 6 17 .003677227
L1 67,900,109 1.0009 67,839,054 7 832 .027836884
L1 68,262,445 1.0528 64,838,949 7 190 .050094484
L1 67,669,663 0.9906 68,311,794 6 59 .002596209
L1 67,243,379 0.9921 67,778,832 5 16 .001067670
Random Totals: 2,486,295,100   2,594,298,858 246 19,723  
Catg D1 Exception Values: 5,743,680   6,479,909      
Total Test Values (4): 2,492,038,780   2,600,778,767      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 130,038,938

Confidence Interval Values (5)

State Lower Limit: 2,470,739,829 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,492,038,780 (Within Confidence Interval)
State Upper Limit: 2,730,817,705 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,838,242,010 (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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