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2009 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 23,126,260 1.0367 22,307,572 21 608 .028152355
A 23,027,780 0.9632 23,907,579 18 312 .019694931
A 25,097,200 1.0132 24,770,233 21 242 .021212451
A 28,668,650 0.9976 28,737,620 23 176 .003452002
D3 60,649,640 1.0263 59,095,430 29 2,690 .082212274
F1 3,440,880 0.9823 3,502,881 8 72 .001202218
F1 3,688,640 0.9763 3,778,183 7 23 .000977429
F1 2,962,840 0.9663 3,066,170 5 9 .001008544
L1 1,707,570 0.9309 1,834,322 8 57 .021698266
L1 1,829,430 0.9696 1,886,788 8 20 .000429154
L1 1,797,410 0.9799 1,834,279 4 9 .000119600
Random Totals: 175,996,300   174,721,057 152 4,218  
Catg J Exception Values: 7,697,790   7,514,902      
Catg D1 Exception Values: 6,418,230   6,272,480      
Catg F1 Exception Values: 2,782,150   2,965,712      
Catg L1 Exception Values: 7,317,480   7,551,454      
Total Test Values (4): 200,211,950   199,025,605      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,951,280

Confidence Interval Values (5)

State Lower Limit: 189,074,325 (State Test Value minus Margin of Error Percent)
Local Test Value: 200,211,950 (Within Confidence Interval)
State Upper Limit: 208,976,885 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 178,304,418 (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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