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2009 Confidence Interval Detail
016/Blanco
016-901/Johnson City ISD

Category Summary

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

Stratum
Variance
A 15,477,938 0.9435 16,404,810 7 208 .011616651
A 15,276,020 1.0331 14,786,584 7 126 .002237326
A 13,493,690 1.0098 13,362,735 6 78 .001758509
A 16,216,590 0.9609 16,876,460 6 61 .001600224
D3 310,649,433 1.0122 306,905,190 27 5,903 .006827132
F1 10,290,610 1.0090 10,198,821 6 73 .003707361
F1 9,989,630 0.9804 10,189,341 6 35 .004384792
F1 9,957,090 1.0426 9,550,249 5 16 .008715415
F1 7,377,370 1.0066 7,328,999 3 4 .001515143
Random Totals: 408,728,371   405,603,189 73 6,504  
Catg J Exception Values: 28,167,455   22,996,454      
Catg D1 Exception Values: 24,202,255   23,723,880      
Total Test Values (4): 461,098,081   452,323,523      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 22,616,176

Confidence Interval Values (5)

State Lower Limit: 429,707,347 (State Test Value minus Margin of Error Percent)
Local Test Value: 461,098,081 (Within Confidence Interval)
State Upper Limit: 474,939,699 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 481,675,905 (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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