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2010 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 23,911,260 1.0320 23,169,826 17 594 .069656472
A 24,403,850 0.9911 24,622,995 15 315 .004241416
A 25,761,250 0.9574 26,907,510 16 234 .011900041
A 26,919,850 1.0321 26,082,599 19 158 .003005886
D3 64,321,550 0.9583 67,120,474 24 2,772 .036722247
F1 3,537,140 0.9702 3,645,784 11 71 .006272390
F1 3,381,020 0.9927 3,405,883 8 21 .005360662
F1 3,992,720 0.9952 4,011,977 6 11 .006155676
Random Totals: 176,228,640   178,967,048 116 4,176  
Catg J Exception Values: 7,726,842   7,886,563      
Catg D1 Exception Values: 6,407,220   6,428,787      
Catg F1 Exception Values: 2,850,130   2,864,032      
Total Test Values (4): 193,212,832   196,146,430      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 9,807,322

Confidence Interval Values (5)

State Lower Limit: 186,339,108 (State Test Value minus Margin of Error Percent)
Local Test Value: 193,212,832 (Within Confidence Interval)
State Upper Limit: 205,953,752 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 179,880,185 (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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