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2009 Confidence Interval Detail
030/Callahan
030-901/Cross Plains ISD

Category Summary

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

Stratum
Variance
A 3,990,150 1.0387 3,841,485 12 214 .028725975
A 4,238,450 0.8826 4,802,232 12 103 .036631481
A 4,316,550 0.9415 4,584,758 11 62 .012715086
A 5,264,330 0.9380 5,612,292 10 42 .031859010
D3 31,602,050 0.9517 33,205,895 33 1,968 .120232567
F1 1,022,150 0.9872 1,035,403 12 49 .003891217
F1 990,610 0.9410 1,052,721 10 17 .008963672
L1 764,950 0.9725 786,581 14 49 .000409159
L1 1,081,960 0.9759 1,108,679 10 18 .000377127
L1 916,100 0.9792 935,560 4 5 .000076889
Random Totals: 54,187,300   56,965,606 128 2,527  
Catg J Exception Values: 2,236,580   2,103,196      
Catg D1 Exception Values: 6,718,600   6,570,736      
Catg F1 Exception Values: 1,884,970   1,970,762      
Catg L1 Exception Values: 1,108,740   1,117,841      
Total Test Values (4): 66,136,190   68,728,141      

Margin of Error

Margin of Error Percent: 5.8637800
Margin of Error Value: 4,030,067

Confidence Interval Values (5)

State Lower Limit: 64,698,074 (State Test Value minus Margin of Error Percent)
Local Test Value: 66,136,190 (Within Confidence Interval)
State Upper Limit: 72,758,208 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 56,467,698 (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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