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2009 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 3,609,730 0.9742 3,705,327 7 116 .005132304
A 3,501,740 0.9915 3,531,760 6 62 .002895445
A 3,742,890 0.9914 3,775,358 6 40 .012536097
A 3,582,970 0.9830 3,644,934 5 16 .003710865
D3 38,325,790 1.0028 38,218,777 25 726 .072581478
Random Totals: 52,763,120   52,876,156 49 960  
Catg J Exception Values: 3,315,998   3,257,022      
Catg D1 Exception Values: 4,756,040   4,090,339      
Total Test Values (4): 60,835,158   60,223,517      

Margin of Error

Margin of Error Percent: 6.8094512
Margin of Error Value: 4,100,891

Confidence Interval Values (5)

State Lower Limit: 56,122,626 (State Test Value minus Margin of Error Percent)
Local Test Value: 60,835,158 (Within Confidence Interval)
State Upper Limit: 64,324,408 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 72,037,740 (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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