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2007 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 308,738,731 0.9997 308,831,380 23 1,714 .001777171
A 308,355,027 1.0138 304,157,651 30 1,155 .008180006
A 308,288,163 0.9959 309,557,348 30 817 .001762545
A 308,150,417 0.9834 313,352,061 27 525 .002247967
D3 184,778,690 1.0466 176,551,395 21 2,849 .055760554
G1 54,989,571 1.0214 53,837,450 6 57 .015236835
G1 53,560,420 0.9448 56,689,691 5 23 .005591293
G1 52,252,210 1.0059 51,945,730 5 15 .010227146
G1 53,006,990 1.1909 44,510,026 4 9 .002491803
Random Totals: 1,632,120,219   1,619,432,732 151 7,164  
Catg J Exception Values: 50,490,200   52,957,417      
Catg D1 Exception Values: 5,662,950   3,378,745      
Total Test Values (4): 1,688,273,369   1,675,768,894      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 83,788,445

Confidence Interval Values (5)

State Lower Limit: 1,591,980,449 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,688,273,369 (Within Confidence Interval)
State Upper Limit: 1,759,557,339 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,887,808,995 (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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