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2007 Confidence Interval Detail
050/Coryell
050-910/Copperas Cove ISD

Category Summary

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

Stratum
Variance
A 211,023,450 0.9134 231,030,709 83 3,197 .014880807
A 210,886,200 0.9164 230,124,618 84 2,355 .006449888
A 210,842,408 0.9715 217,027,697 91 1,790 .004258826
A 210,879,276 0.9479 222,469,961 105 1,256 .006174130
B 27,278,814 0.9655 28,253,562 13 295 .017253385
B 27,118,807 1.0650 25,463,669 8 181 .015279317
B 27,344,399 1.0991 24,878,900 51 115 .013394748
B 26,968,057 0.9975 27,035,646 5 24 .000045072
F1 31,674,463 0.9716 32,600,312 7 137 .010878644
F1 31,939,824 0.9846 32,439,391 5 56 .000293275
F1 33,207,065 0.9798 33,891,677 5 20 .028248371
F1 29,650,826 1.0026 29,573,934 3 5 .000620371
Random Totals: 1,078,813,589   1,134,790,076 460 9,431  
Catg D1 Exception Values: 1,821,888   1,411,773      
Total Test Values (4): 1,080,635,477   1,136,201,849      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 56,810,092

Confidence Interval Values (5)

State Lower Limit: 1,079,391,757 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,080,635,477 (Within Confidence Interval)
State Upper Limit: 1,193,011,941 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,082,346,607 (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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