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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 0.9427 103,658,043 28 1,162 .055793339
A 100,055,343 0.9549 104,780,964 20 704 .015065183
A 100,979,675 0.9647 104,674,692 18 510 .017419166
A 95,656,275 0.9483 100,871,322 14 325 .003271311
D3 147,654,980 0.9783 150,930,165 18 4,246 .011591568
F1 22,952,468 0.9717 23,620,941 7 141 .002711959
F1 20,351,354 0.9576 21,252,458 6 49 .003710441
F1 26,380,297 0.9703 27,187,774 7 32 .000242421
F1 32,487,060 0.9496 34,211,310 5 12 .001286880
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: 719,711,987   746,201,716 151 7,432  
Catg J Exception Values: 27,679,452   28,151,411      
Catg D1 Exception Values: 12,611,475   12,494,992      
Catg G1 Exception Values: 10,621,320   9,623,611      
Catg L1 Exception Values: 9,475,081   9,205,510      
Total Test Values (4): 780,099,315   805,677,240      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 40,283,862

Confidence Interval Values (5)

State Lower Limit: 765,393,378 (State Test Value minus Margin of Error Percent)
Local Test Value: 780,099,315 (Within Confidence Interval)
State Upper Limit: 845,961,102 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,094,723,565 (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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