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2006 Confidence Interval Detail
240/Webb
240-904/Webb CISD

Category Summary

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

Stratum
Variance
D3 32,373,901 0.9584 33,779,112 17 2,409 .017218706
G1 413,672,299 1.3358 309,681,314 15 491 .050707646
G1 414,180,265 1.1919 347,495,818 15 214 .022614917
G1 413,437,449 1.1700 353,365,341 15 129 .027939470
G1 410,224,995 1.1779 348,268,100 15 65 .029768731
Random Totals: 1,683,888,909   1,392,589,685 77 3,308  
Catg D1 Exception Values: 23,459,039   38,284,558      
Total Test Values (4): 1,707,347,948   1,430,874,243      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 71,543,712

Confidence Interval Values (5)

State Lower Limit: 1,359,330,531 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,502,417,955 (State Test Value plus Margin of Error Percent)
Local Test Value: 1,707,347,948 (Outside Confidence Interval)
Value Assigned (6): 1,905,221,797 (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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