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2007 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 28,501,956 0.9256 30,792,952 9 401 .053841690
A 28,509,604 0.9237 30,864,571 11 234 .020686652
A 28,446,721 0.9395 30,278,575 7 163 .015621958
A 28,483,943 0.9920 28,713,652 9 101 .009824129
D3 50,290,671 0.9856 51,025,437 21 1,457 .022689602
Random Totals: 164,232,895   171,675,187 57 2,356  
Catg J Exception Values: 11,555,460   11,042,199      
Catg D1 Exception Values: 4,710,537   3,417,106      
Total Test Values (4): 180,498,892   186,134,492      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 9,306,725

Confidence Interval Values (5)

State Lower Limit: 176,827,767 (State Test Value minus Margin of Error Percent)
Local Test Value: 180,498,892 (Within Confidence Interval)
State Upper Limit: 195,441,217 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 185,985,140 (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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