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2008 Confidence Interval Detail
217/Stonewall
217-901/Aspermont CISD

Category Summary

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

Stratum
Variance
A 2,522,726 0.7039 3,583,927 12 213 .108457764
A 2,570,220 0.7864 3,268,337 13 111 .071047661
A 2,590,140 0.8314 3,115,396 11 74 .010839838
A 2,500,340 0.8558 2,921,641 11 39 .027932081
D3 10,227,233 0.6758 15,133,520 31 3,044 .101299062
G1 28,538,750 1.0314 27,669,915 16 75 .007526757
G1 28,218,793 1.0440 27,029,495 12 24 .005481841
G1 30,183,490 1.0039 30,066,232 7 11 .008913748
G1 26,424,777 0.9819 26,911,882 3 4 .002642027
Random Totals: 133,776,469   139,700,345 116 3,595  
Catg J Exception Values: 3,181,804   2,948,093      
Catg D1 Exception Values: 22,581,260   21,786,563      
Total Test Values (4): 159,539,533   164,435,001      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,221,750

Confidence Interval Values (5)

State Lower Limit: 156,213,251 (State Test Value minus Margin of Error Percent)
Local Test Value: 159,539,533 (Within Confidence Interval)
State Upper Limit: 172,656,751 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 179,643,601 (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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