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2007 Confidence Interval Detail
014/Bell
014-901/Academy ISD

Category Summary

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

Stratum
Variance
A 28,551,383 0.9422 30,302,890 9 402 .019568948
A 28,364,427 0.9870 28,738,021 14 246 .001767340
A 28,619,917 0.9786 29,245,777 19 181 .001223833
A 28,294,104 1.0092 28,036,171 8 75 .002796457
D3 41,688,046 0.9495 43,905,262 18 1,325 .014683093
Random Totals: 155,517,877   160,228,121 68 2,229  
Catg J Exception Values: 11,343,534   11,272,989      
Catg D1 Exception Values: 5,732,004   5,165,847      
Total Test Values (4): 172,593,415   176,666,957      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 8,833,348

Confidence Interval Values (5)

State Lower Limit: 167,833,609 (State Test Value minus Margin of Error Percent)
Local Test Value: 172,593,415 (Within Confidence Interval)
State Upper Limit: 185,500,305 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 168,834,172 (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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