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2008 Confidence Interval Detail
018/Bosque
018-905/Walnut Springs ISD

Category Summary

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

Stratum
Variance
A 3,269,420 1.0034 3,258,342 7 110 .020409128
A 3,252,380 0.9785 3,323,843 6 61 .001334845
A 3,797,960 1.0236 3,710,395 7 44 .007547083
A 3,942,120 0.9856 3,999,716 5 19 .002193521
D3 41,732,100 0.9659 43,205,404 16 711 .035028216
Random Totals: 55,993,980   57,497,700 41 945  
Catg J Exception Values: 3,709,959   3,534,758      
Catg D1 Exception Values: 4,722,750   4,197,453      
Total Test Values (4): 64,426,689   65,229,911      

Margin of Error

Margin of Error Percent: 6.2422575
Margin of Error Value: 4,071,819

Confidence Interval Values (5)

State Lower Limit: 61,158,092 (State Test Value minus Margin of Error Percent)
Local Test Value: 64,426,689 (Within Confidence Interval)
State Upper Limit: 69,301,730 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 73,475,035 (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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