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2007 Confidence Interval Detail
038/Childress
038-901/Childress ISD

Category Summary

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

Stratum
Variance
A 18,913,062 1.0012 18,890,394 24 788 .091297187
A 18,871,629 1.0460 18,041,710 27 427 .055699216
A 18,856,285 0.8950 21,068,475 19 283 .040466443
A 18,880,102 0.9423 20,036,190 13 169 .015801036
D3 15,202,210 0.6342 23,970,687 17 2,568 .107861198
F1 7,093,798 0.7712 9,198,390 10 141 .112928179
F1 7,257,594 0.8790 8,256,648 10 30 .142025994
F1 6,976,863 0.7061 9,880,843 5 10 .050936021
L1 5,057,589 0.9816 5,152,393 7 120 .005299762
L1 5,134,363 1.0240 5,014,026 7 34 .003059655
L1 5,782,100 0.9888 5,847,593 4 8 .000536004
Random Totals: 128,025,595   145,357,349 143 4,578  
Catg J Exception Values: 16,461,390   17,224,794      
Catg D1 Exception Values: 23,358,530   28,585,419      
Catg F1 Exception Values: 4,638,960   7,298,708      
Catg L1 Exception Values: 6,441,010   6,856,650      
Total Test Values (4): 178,925,485   205,322,920      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,266,146

Confidence Interval Values (5)

Local Test Value: 178,925,485 (Outside Confidence Interval)
State Lower Limit: 195,056,774 (State Test Value minus Margin of Error Percent)
State Upper Limit: 215,589,066 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 168,331,310 (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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