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2009 Confidence Interval Detail
008/Austin
008-903/Brazos ISD

Category Summary

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

Stratum
Variance
A 10,363,867 0.9325 11,114,066 15 214 .011390542
A 12,492,754 0.9208 13,567,283 15 144 .015893494
A 10,611,565 0.9367 11,328,670 15 93 .007531594
A 12,610,287 0.9973 12,644,427 19 75 .009874505
D3 19,144,207 0.9553 20,039,995 20 888 .009656957
Random Totals: 65,222,680   68,694,441 84 1,414  
Catg J Exception Values: 8,374,079   8,653,710      
Catg D1 Exception Values: 2,788,902   2,779,676      
Total Test Values (4): 76,385,661   80,127,827      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,006,391

Confidence Interval Values (5)

State Lower Limit: 76,121,436 (State Test Value minus Margin of Error Percent)
Local Test Value: 76,385,661 (Within Confidence Interval)
State Upper Limit: 84,134,218 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 85,014,449 (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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