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2007 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 14,182,060 0.8836 16,050,317 7 187 .088272705
A 14,223,749 0.8830 16,108,436 9 116 .065285362
A 14,141,812 0.9895 14,291,877 6 79 .015551885
A 13,975,656 1.0392 13,448,476 7 52 .008858850
D3 324,334,133 0.9765 332,139,409 29 6,195 .084350867
F1 9,161,860 1.0163 9,014,917 7 70 .032389489
F1 9,096,747 1.0778 8,440,107 6 35 .003023851
F1 9,570,528 1.0348 9,248,674 5 19 .003889130
F1 8,325,731 1.0453 7,964,920 3 6 .004433393
Random Totals: 417,012,276   426,707,133 79 6,759  
Catg J Exception Values: 36,282,252   36,588,136      
Catg D1 Exception Values: 24,510,050   24,118,376      
Total Test Values (4): 477,804,578   487,413,645      

Margin of Error

Margin of Error Percent: 7.3652743
Margin of Error Value: 35,899,352

Confidence Interval Values (5)

State Lower Limit: 451,514,293 (State Test Value minus Margin of Error Percent)
Local Test Value: 477,804,578 (Within Confidence Interval)
State Upper Limit: 523,312,997 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 482,196,279 (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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