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2006 Confidence Interval Detail
090/Gray
090-903/McLean ISD

Category Summary

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

Stratum
Variance
A 8,314,540 0.8354 9,952,765 20 499 .081015668
D3 6,132,910 0.6295 9,742,510 19 1,131 .754310450
G1 27,010,463 1.1501 23,485,317 11 231 .140257659
G1 26,969,446 1.0794 24,985,590 10 99 .027110348
G1 27,074,157 1.1468 23,608,438 9 60 .023606141
G1 26,527,514 1.2756 20,796,107 8 34 .026842760
Random Totals: 122,029,030   112,570,727 77 2,054  
Catg J Exception Values: 5,884,704   5,834,950      
Catg D1 Exception Values: 8,676,750   11,151,903      
Total Test Values (4): 136,590,484   129,557,580      

Margin of Error

Margin of Error Percent: 5.8813981
Margin of Error Value: 7,619,797

Confidence Interval Values (5)

State Lower Limit: 121,937,783 (State Test Value minus Margin of Error Percent)
Local Test Value: 136,590,484 (Within Confidence Interval)
State Upper Limit: 137,177,377 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 159,064,862 (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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