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2011 Confidence Interval Detail
016/Blanco
016-902/Blanco ISD

Category Summary

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

Stratum
Variance
A 19,582,730 0.9923 19,734,687 10 246 .011760213
A 20,195,090 1.0145 19,906,447 10 158 .012054071
A 19,894,720 1.0742 18,520,499 10 98 .006561011
A 16,936,950 1.0332 16,392,712 10 42 .010785012
C 21,520,320 1.0151 21,200,197 23 805 .009205248
C 17,361,270 1.0138 17,124,946 11 466 .054074623
C 16,101,290 0.9946 16,188,709 10 312 .027941394
C 14,019,100 0.9589 14,619,981 10 157 .075960980
D3 326,616,295 1.0044 325,185,479 58 4,507 .034210059
F1 12,393,210 0.9614 12,890,795 12 85 .002546365
F1 11,154,070 0.9699 11,500,227 10 37 .000569811
F1 11,380,530 0.9839 11,566,755 7 19 .000384513
F1 9,966,720 0.9807 10,162,863 4 6 .002611995
Random Totals: 517,122,295   514,994,297 185 6,938  
Catg D1 Exception Values: 8,953,556   8,321,053      
Total Test Values (4): 526,075,851   523,315,350      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 26,165,768

Confidence Interval Values (5)

State Lower Limit: 497,149,582 (State Test Value minus Margin of Error Percent)
Local Test Value: 526,075,851 (Within Confidence Interval)
State Upper Limit: 549,481,118 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 519,949,981 (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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