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2009 Confidence Interval Detail
070/Ellis
070-909/Milford ISD

Category Summary

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

Stratum
Variance
A 3,974,355 1.0009 3,970,781 14 115 .016667158
A 4,027,090 0.8988 4,480,518 9 67 .014105211
A 3,914,070 1.0494 3,729,817 10 47 .018609731
A 3,489,320 1.0633 3,281,595 9 25 .008142568
D3 10,925,810 1.0562 10,344,452 21 648 .029188539
Random Totals: 26,330,645   25,807,163 63 902  
Catg J Exception Values: 20,745,650   21,265,371      
Catg D1 Exception Values: 3,543,681   2,844,579      
Total Test Values (4): 50,619,976   49,917,113      

Margin of Error

Margin of Error Percent: 5.0000007
Margin of Error Value: 2,495,856

Confidence Interval Values (5)

State Lower Limit: 47,421,257 (State Test Value minus Margin of Error Percent)
Local Test Value: 50,619,976 (Within Confidence Interval)
State Upper Limit: 52,412,969 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 51,413,316 (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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