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2008 Confidence Interval Detail
070/Ellis
070-915/Maypearl ISD

Category Summary

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

Stratum
Variance
A 27,144,674 0.9439 28,757,998 17 395 .015838303
A 29,068,768 0.9832 29,565,468 17 250 .015341586
A 29,745,813 0.9905 30,031,109 18 175 .003792414
A 32,771,079 1.0084 32,498,095 16 124 .003025054
D3 59,662,050 0.9255 64,464,668 21 1,531 .049116089
Random Totals: 178,392,384   185,317,338 89 2,475  
Catg J Exception Values: 17,389,300   18,199,379      
Catg D1 Exception Values: 4,962,837   3,475,315      
Total Test Values (4): 200,744,521   206,992,032      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 10,349,602

Confidence Interval Values (5)

State Lower Limit: 196,642,430 (State Test Value minus Margin of Error Percent)
Local Test Value: 200,744,521 (Within Confidence Interval)
State Upper Limit: 217,341,634 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 208,404,453 (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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