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2007 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 4,177,896 1.0138 4,121,026 9 131 .030755544
A 4,199,364 0.9815 4,278,517 10 74 .041191151
A 4,143,179 0.9910 4,180,806 9 52 .004130321
A 4,152,134 1.0697 3,881,587 10 29 .037336863
D3 12,448,020 0.8520 14,610,352 20 821 .155407654
Random Totals: 29,120,593   31,072,288 58 1,107  
Catg J Exception Values: 6,710,590   6,390,110      
Catg D1 Exception Values: 3,874,985   3,289,018      
Total Test Values (4): 39,706,168   40,751,416      

Margin of Error

Margin of Error Percent: 6.5661669
Margin of Error Value: 2,675,806

Confidence Interval Values (5)

State Lower Limit: 38,075,610 (State Test Value minus Margin of Error Percent)
Local Test Value: 39,706,168 (Within Confidence Interval)
State Upper Limit: 43,427,222 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 51,247,825 (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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