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2008 Confidence Interval Detail
030/Callahan
030-902/Clyde ISD

Category Summary

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

Stratum
Variance
A 19,511,260 0.9176 21,263,361 13 573 .046378621
A 18,765,600 0.9976 18,810,746 7 290 .009606512
A 25,211,480 0.9235 27,299,924 17 277 .041407422
A 32,765,910 1.0181 32,183,391 11 222 .008620514
D3 57,458,950 1.1103 51,750,833 38 2,793 .159812400
F1 2,738,550 0.9780 2,800,153 7 68 .007197392
F1 3,667,470 0.9387 3,906,967 8 26 .013945959
F1 3,972,990 0.9716 4,089,121 6 12 .000303400
G1 948,099 0.8919 1,063,010 5 14 .443607772
G1 1,050,687 0.9550 1,100,196 3 4 .035356653
Random Totals: 166,090,996   164,267,702 115 4,279  
Catg J Exception Values: 6,530,856   7,486,322      
Catg D1 Exception Values: 6,430,540   6,363,675      
Catg F1 Exception Values: 2,782,150   2,912,455      
Catg G1 Exception Values: 2,758,267   3,286,988      
Total Test Values (4): 184,592,809   184,317,142      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,215,857

Confidence Interval Values (5)

State Lower Limit: 175,101,285 (State Test Value minus Margin of Error Percent)
Local Test Value: 184,592,809 (Within Confidence Interval)
State Upper Limit: 193,532,999 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 174,573,760 (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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