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2008 Confidence Interval Detail
109/Hill
109-913/Blum ISD

Category Summary

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

Stratum
Variance
A 3,469,690 0.9591 3,617,652 11 109 .003591560
A 3,467,730 0.8764 3,956,789 11 64 .022172143
A 3,890,720 0.9133 4,260,068 10 51 .011441995
A 4,045,720 0.9996 4,047,339 10 32 .018736307
D3 37,586,680 0.9910 37,928,032 40 1,471 .012084854
G1 20,727,690 1.0043 20,638,943 21 31 .003156206
Random Totals: 73,188,230   74,448,823 103 1,758  
Catg J Exception Values: 15,167,516   16,260,298      
Catg D1 Exception Values: 4,876,068   3,674,872      
Total Test Values (4): 93,231,814   94,383,993      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 4,719,200

Confidence Interval Values (5)

State Lower Limit: 89,664,793 (State Test Value minus Margin of Error Percent)
Local Test Value: 93,231,814 (Within Confidence Interval)
State Upper Limit: 99,103,193 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 117,704,849 (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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