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2007 Confidence Interval Detail
048/Concho
048-903/Paint Rock ISD

Category Summary

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

Stratum
Variance
A 4,338,149 0.9802 4,425,779 13 141 .066336649
A 4,398,936 0.9214 4,774,187 13 59 .027515449
A 4,427,475 0.9401 4,709,579 10 29 .009804912
A 4,152,039 1.0700 3,880,410 9 10 .020231456
C 1,277,438 1.0138 1,260,049 7 177 .011558175
C 1,396,651 1.0120 1,380,090 9 83 .013579493
C 1,199,178 1.0221 1,173,249 8 33 .003394058
C 1,188,823 1.0256 1,159,149 7 15 .001960404
D3 9,139,460 0.9468 9,653,000 30 1,692 .151830142
G1 4,584,569 0.9943 4,610,851 10 44 .209477710
Random Totals: 36,102,718   37,026,343 116 2,283  
Catg J Exception Values: 3,271,189   3,147,381      
Catg D1 Exception Values: 13,945,440   13,151,536      
Total Test Values (4): 53,319,347   53,325,260      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,666,263

Confidence Interval Values (5)

State Lower Limit: 50,658,997 (State Test Value minus Margin of Error Percent)
Local Test Value: 53,319,347 (Within Confidence Interval)
State Upper Limit: 55,991,523 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 61,393,889 (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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