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2009 Confidence Interval Detail
184/Parker
184-907/Aledo ISD

Category Summary

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

Stratum
Variance
A 323,438,490 0.9654 335,030,547 62 1,957 .007807283
A 344,238,130 0.9804 351,120,084 59 1,424 .005340939
A 345,302,440 0.9746 354,301,703 59 1,021 .004761998
A 354,912,990 0.9820 361,418,523 34 679 .007399079
D3 188,823,230 0.9568 197,348,694 18 2,489 .028829483
G1 127,705,154 0.9671 132,049,585 7 147 .024918881
G1 127,679,361 0.9851 129,610,558 6 69 .033426883
G1 126,138,411 1.0079 125,149,728 6 43 .019999347
G1 125,994,180 1.1326 111,243,316 6 29 .018100551
Random Totals: 2,064,232,386   2,097,272,738 257 7,858  
Catg D1 Exception Values: 5,112,970   3,028,027      
Total Test Values (4): 2,069,345,356   2,100,300,765      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 105,015,038

Confidence Interval Values (5)

State Lower Limit: 1,995,285,727 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,069,345,356 (Within Confidence Interval)
State Upper Limit: 2,205,315,803 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,391,150,366 (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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