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2008 Confidence Interval Detail
060/Delta
060-902/Cooper ISD

Category Summary

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

Stratum
Variance
A 11,250,010 1.0416 10,800,701 13 467 .085175042
A 15,165,850 1.0381 14,609,238 17 343 .026727911
A 14,795,770 0.9697 15,258,090 12 213 .085197224
A 15,335,240 0.9885 15,513,647 14 127 .006396245
D3 50,308,621 0.8925 56,368,203 24 3,515 .061543889
Random Totals: 106,855,491   112,549,879 80 4,665  
Catg J Exception Values: 8,954,452   8,960,643      
Catg D1 Exception Values: 14,029,842   13,605,920      
Total Test Values (4): 129,839,785   135,116,442      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,755,822

Confidence Interval Values (5)

State Lower Limit: 128,360,620 (State Test Value minus Margin of Error Percent)
Local Test Value: 129,839,785 (Within Confidence Interval)
State Upper Limit: 141,872,264 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 143,621,853 (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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