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2008 Confidence Interval Detail
049/Cooke
049-906/Era ISD

Category Summary

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

Stratum
Variance
A 4,712,313 1.0311 4,570,180 8 113 .017849604
A 4,974,030 0.9968 4,989,998 10 64 .007162314
A 4,785,893 1.0981 4,358,340 9 40 .018220789
A 5,174,738 1.0912 4,742,245 6 24 .008586518
D3 55,505,737 0.9941 55,835,164 33 2,291 .065943279
G1 8,632,480 0.9851 8,763,049 5 20 .005760868
G1 8,141,512 1.0123 8,042,588 3 6 .002356364
G1 10,233,060 1.1353 9,013,529 3 4 .006648852
Random Totals: 102,159,763   100,315,093 77 2,562  
Catg D1 Exception Values: 8,871,498   9,382,845      
Catg G1 Exception Values: 5,982,540   5,800,530      
Total Test Values (4): 117,013,801   115,498,468      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,774,923

Confidence Interval Values (5)

State Lower Limit: 109,723,545 (State Test Value minus Margin of Error Percent)
Local Test Value: 117,013,801 (Within Confidence Interval)
State Upper Limit: 121,273,391 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 116,855,566 (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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