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2009 Confidence Interval Detail
108/Hidalgo
108-907/Mercedes ISD

Category Summary

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

Stratum
Variance
A 55,826,875 1.0012 55,759,963 9 1,845 .038897172
A 51,131,495 1.0206 50,099,446 10 1,044 .003073990
A 52,921,712 1.0721 49,362,664 10 689 .016220156
A 52,038,578 1.0034 51,862,246 9 375 .037031735
C 9,578,877 1.0162 9,426,173 9 780 .000397554
C 9,050,063 1.0337 8,755,019 7 417 .000517576
C 8,618,298 1.0852 7,941,668 8 134 .006309816
C 8,630,978 1.0059 8,580,354 5 21 .000011071
F1 11,666,768 0.9755 11,959,783 8 96 .009100497
F1 11,417,975 0.9367 12,189,575 6 39 .015052800
F1 14,836,280 0.7018 21,140,325 5 17 .016999377
F1 8,530,130 0.8430 10,118,778 3 3 .003258369
L1 18,226,851 1.0975 16,607,609 7 126 .004958208
L1 16,581,322 1.0970 15,115,152 7 46 .004184401
L1 17,438,380 1.0220 17,062,994 5 27 .003832091
L1 24,580,993 1.0413 23,606,063 5 15 .005281844
Random Totals: 371,075,575   369,587,812 113 5,674  
Catg D1 Exception Values: 7,917,502   8,398,297      
Catg F1 Exception Values: 59,877,251   55,925,067      
Total Test Values (4): 438,870,328   433,911,176      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 21,695,559

Confidence Interval Values (5)

State Lower Limit: 412,215,617 (State Test Value minus Margin of Error Percent)
Local Test Value: 438,870,328 (Within Confidence Interval)
State Upper Limit: 455,606,735 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 444,742,727 (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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