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2008 Confidence Interval Detail
008/Austin
008-902/Sealy ISD

Category Summary

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

Stratum
Variance
A 76,826,840 0.9018 85,192,770 15 1,013 .078026666
A 89,659,187 0.9765 91,816,884 14 696 .026997907
A 100,031,757 0.9965 100,383,098 12 561 .002318342
A 129,225,783 1.0619 121,692,987 13 472 .019993531
D3 150,967,402 0.9497 158,963,254 20 4,090 .032548901
F1 20,218,160 0.9494 21,295,724 7 144 .005137909
F1 24,124,245 1.0028 24,056,886 6 65 .004831014
F1 25,279,191 0.8835 28,612,553 5 31 .021934434
F1 22,673,244 0.9503 23,859,038 4 8 .002045553
G1 14,308,870 0.8308 17,223,002 5 17 .047039863
G1 12,231,700 0.8752 13,975,891 3 6 .008222287
G1 15,826,780 1.0047 15,752,742 3 5 .004648021
Random Totals: 681,373,159   702,824,829 107 7,108  
Catg J Exception Values: 27,505,697   28,649,631      
Catg D1 Exception Values: 13,407,721   12,996,469      
Catg G1 Exception Values: 10,270,540   10,113,453      
Total Test Values (4): 732,557,117   754,584,382      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 37,729,219

Confidence Interval Values (5)

State Lower Limit: 716,855,163 (State Test Value minus Margin of Error Percent)
Local Test Value: 732,557,117 (Within Confidence Interval)
State Upper Limit: 792,313,601 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,068,107,537 (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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