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2009 Confidence Interval Detail
062/Dewitt
062-904/Yorktown ISD

Category Summary

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

Stratum
Variance
A 9,361,130 0.9882 9,472,910 8 346 .016834102
A 9,629,950 1.0108 9,527,058 7 215 .022781379
A 9,508,390 0.9522 9,985,707 7 154 .013963446
A 9,344,940 1.0124 9,230,482 7 97 .037399336
D3 32,734,550 1.0002 32,728,004 23 3,449 .062364818
F1 1,928,770 0.9753 1,977,617 6 57 .029269512
F1 1,837,470 1.0022 1,833,436 6 19 .004473207
F1 2,201,260 0.9193 2,394,496 4 8 .005210293
F1 1,094,980 0.9005 1,215,969 2 2 .006767848
G1 7,446,270 1.0611 7,017,501 4 11 .208024137
G1 6,646,201 1.3112 5,068,793 2 3 .132345591
Random Totals: 91,733,911   90,451,973 76 4,361  
Catg J Exception Values: 4,531,562   4,564,161      
Catg D1 Exception Values: 8,834,870   8,338,259      
Catg G1 Exception Values: 23,659,150   24,386,928      
Total Test Values (4): 128,759,493   127,741,321      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,387,066

Confidence Interval Values (5)

State Lower Limit: 121,354,255 (State Test Value minus Margin of Error Percent)
Local Test Value: 128,759,493 (Within Confidence Interval)
State Upper Limit: 134,128,387 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 143,243,359 (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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