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2009 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 97,718,437 0.8544 114,370,830 22 1,162 .017809173
A 100,055,343 0.9474 105,610,453 21 704 .015471897
A 100,979,675 0.9486 106,451,270 20 510 .018052039
A 95,656,275 0.9483 100,871,322 14 325 .003271311
D3 148,438,791 0.9672 153,472,695 20 4,246 .012807768
F1 22,952,468 0.9467 24,244,711 7 141 .001093207
F1 20,351,354 0.9370 21,719,695 6 49 .003277412
F1 26,380,297 0.9563 27,585,796 7 32 .000321619
F1 32,487,060 0.9332 34,812,538 5 12 .002664684
G1 14,471,320 0.9857 14,681,262 5 16 .001712691
G1 14,742,390 0.9420 15,650,096 4 7 .008253190
G1 14,081,730 1.1637 12,100,825 3 4 .023628094
L1 11,232,990 1.0033 11,196,043 7 183 .001645207
L1 11,812,114 1.0396 11,362,172 5 33 .001364330
L1 9,135,554 0.9114 10,023,649 4 8 .017230534
Random Totals: 720,495,798   764,153,357 150 7,432  
Catg J Exception Values: 27,679,452   28,574,774      
Catg D1 Exception Values: 12,596,367   12,477,904      
Catg G1 Exception Values: 10,621,320   9,623,611      
Catg L1 Exception Values: 9,475,081   9,205,510      
Total Test Values (4): 780,868,018   824,035,156      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 41,201,758

Confidence Interval Values (5)

Local Test Value: 780,868,018 (Outside Confidence Interval)
State Lower Limit: 782,833,398 (State Test Value minus Margin of Error Percent)
State Upper Limit: 865,236,914 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,104,169,020 (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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