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2011 Confidence Interval Detail
228/Trinity
228-905/Apple Springs ISD

Category Summary

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

Stratum
Variance
A 1,347,133 0.7929 1,698,995 12 73 .059902730
A 1,098,613 0.7555 1,454,154 10 35 .033458600
A 2,789,508 1.0419 2,677,328 10 51 .021793830
A 5,032,503 0.9474 5,311,909 11 48 .064590797
D3 17,027,928 0.9436 18,045,706 22 1,415 .235135063
Random Totals: 27,295,685   29,188,092 65 1,622  
Catg J Exception Values: 461,682   460,347      
Catg D1 Exception Values: 9,909,697   9,632,708      
Total Test Values (4): 37,667,064   39,281,147      

Margin of Error

Margin of Error Percent: 9.6391457
Margin of Error Value: 3,786,367

Confidence Interval Values (5)

State Lower Limit: 35,494,780 (State Test Value minus Margin of Error Percent)
Local Test Value: 37,667,064 (Within Confidence Interval)
State Upper Limit: 43,067,514 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 31,748,741 (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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