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2009 Confidence Interval Detail
125/Jim Wells
125-903/Orange Grove ISD

Category Summary

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

Stratum
Variance
A 11,107,570 0.9706 11,444,024 10 264 .033747169
A 11,144,971 0.9481 11,755,059 9 124 .012050528
A 12,191,666 0.9455 12,894,411 9 88 .000908756
A 10,925,320 0.9345 11,691,086 9 46 .005938826
D3 126,477,571 0.9916 127,548,982 20 6,885 .030363686
Random Totals: 171,847,098   175,333,562 57 7,407  
Catg J Exception Values: 5,077,997   5,042,062      
Catg D1 Exception Values: 13,595,909   12,948,623      
Total Test Values (4): 190,521,004   193,324,247      

Margin of Error

Margin of Error Percent: 5.2178959
Margin of Error Value: 10,087,458

Confidence Interval Values (5)

State Lower Limit: 183,236,789 (State Test Value minus Margin of Error Percent)
Local Test Value: 190,521,004 (Within Confidence Interval)
State Upper Limit: 203,411,705 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 193,759,145 (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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