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2007 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 4,760,306 1.0040 4,741,341 12 112 .080230935
A 4,802,407 1.0897 4,407,091 10 63 .019003601
A 4,709,741 1.0379 4,537,760 12 38 .010987483
A 4,745,556 1.0648 4,456,758 9 22 .008793618
D3 54,710,114 0.9722 56,274,546 29 2,305 .049067575
G1 6,184,090 1.1007 5,618,325 11 41 .106338522
Random Totals: 79,912,214   80,035,821 83 2,581  
Catg D1 Exception Values: 8,932,060   9,195,255      
Total Test Values (4): 88,844,274   89,231,076      

Margin of Error

Margin of Error Percent: 5.3264448
Margin of Error Value: 4,752,844

Confidence Interval Values (5)

State Lower Limit: 84,478,232 (State Test Value minus Margin of Error Percent)
Local Test Value: 88,844,274 (Within Confidence Interval)
State Upper Limit: 93,983,920 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 87,501,438 (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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