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2007 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 12,882,886 0.9161 14,062,751 15 544 .062588111
A 12,895,439 0.8861 14,553,029 16 292 .028229654
A 12,924,474 0.9206 14,039,185 15 183 .011981989
A 12,783,048 0.9851 12,976,396 15 104 .003958035
D3 45,682,509 0.8787 51,988,744 27 3,515 .076597246
Random Totals: 97,168,356   107,620,105 88 4,638  
Catg J Exception Values: 8,826,882   8,837,664      
Catg D1 Exception Values: 14,275,462   13,468,734      
Total Test Values (4): 120,270,700   129,926,503      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,496,325

Confidence Interval Values (5)

Local Test Value: 120,270,700 (Outside Confidence Interval)
State Lower Limit: 123,430,178 (State Test Value minus Margin of Error Percent)
State Upper Limit: 136,422,828 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 142,319,614 (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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