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2012 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 25,127,480 0.8613 29,173,900 17 593 .060220264
A 25,709,030 0.9842 26,121,754 13 319 .019611757
A 25,835,070 0.9534 27,097,829 17 226 .040291725
A 27,123,640 1.0198 26,597,019 11 155 .013536377
D3 67,784,900 0.8791 77,107,155 25 2,806 .082056345
F1 3,824,490 0.9669 3,955,414 10 73 .001477255
F1 3,363,780 0.9740 3,453,573 8 21 .001606412
F1 3,929,400 0.9625 4,082,494 7 11 .002187399
Random Totals: 182,697,790   197,589,138 108 4,204  
Catg J Exception Values: 2,246,938   3,494,564      
Catg D1 Exception Values: 6,433,780   6,599,321      
Catg F1 Exception Values: 2,832,570   2,958,426      
Total Test Values (4): 194,211,078   210,641,449      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,532,072

Confidence Interval Values (5)

Local Test Value: 194,211,078 (Outside Confidence Interval)
State Lower Limit: 200,109,377 (State Test Value minus Margin of Error Percent)
State Upper Limit: 221,173,521 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 186,011,226 (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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