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2011 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 15,603,217 0.9936 15,703,721 10 210 .004815595
A 14,421,540 1.0051 14,348,363 10 119 .008732999
A 15,749,040 1.0844 14,523,276 11 91 .006171496
A 14,877,040 1.0314 14,424,123 11 55 .006397877
D3 327,548,449 1.0172 322,009,879 36 6,055 .004910799
F1 9,378,000 0.9680 9,688,017 9 70 .008280595
F1 9,311,490 0.9509 9,792,292 9 36 .000980108
F1 9,757,060 0.9511 10,258,711 11 18 .002374570
F1 7,927,980 0.9553 8,298,943 4 5 .001168637
Random Totals: 424,573,816   419,047,325 111 6,659  
Catg J Exception Values: 27,084,666   33,283,808      
Catg D1 Exception Values: 24,193,860   22,498,118      
Total Test Values (4): 475,852,342   474,829,251      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 23,741,463

Confidence Interval Values (5)

State Lower Limit: 451,087,788 (State Test Value minus Margin of Error Percent)
Local Test Value: 475,852,342 (Within Confidence Interval)
State Upper Limit: 498,570,714 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 491,307,293 (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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