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2009 Confidence Interval Detail
107/Henderson
129-905/Mabank ISD

Category Summary

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

Stratum
Variance
A 134,726,330 1.0036 134,243,055 76 2,266 .030041849
A 149,258,540 1.0359 144,085,858 52 1,153 .031060816
A 148,407,330 1.0152 146,185,313 27 618 .014528204
A 146,100,520 1.0373 140,846,930 20 355 .020073201
C 12,578,330 0.8893 14,144,080 33 3,731 .270200678
C 13,095,600 0.9253 14,152,815 8 405 .017351671
C 11,784,940 1.0716 10,997,518 8 94 .019454076
C 12,034,100 0.9948 12,097,004 7 32 .001266533
F1 27,017,120 0.9513 28,400,210 7 185 .009875575
F1 28,423,470 0.8613 33,000,662 6 78 .043759541
F1 27,208,580 0.9526 28,562,440 6 32 .009608984
F1 31,426,800 1.0284 30,558,926 4 10 .001798899
L1 11,852,980 1.0475 11,315,494 7 198 .005317547
L1 9,490,220 0.9903 9,583,177 6 43 .021309817
L1 15,707,070 1.0620 14,790,085 5 17 .003069294
Random Totals: 779,111,930   772,963,567 272 9,217  
Catg D1 Exception Values: 613,990   563,416      
Catg L1 Exception Values: 6,930,730   6,965,148      
Total Test Values (4): 786,656,650   780,492,131      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 39,024,607

Confidence Interval Values (5)

State Lower Limit: 741,467,524 (State Test Value minus Margin of Error Percent)
Local Test Value: 786,656,650 (Within Confidence Interval)
State Upper Limit: 819,516,738 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 716,423,493 (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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