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2007 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 7,771,538 0.9017 8,618,762 8 282 .029642441
A 7,740,165 0.9979 7,756,454 7 128 .009066840
A 7,814,959 0.9606 8,135,498 6 71 .006112596
A 7,636,229 0.9619 7,938,693 7 39 .010974446
D3 93,596,102 0.9059 103,318,360 27 6,458 .052755559
Random Totals: 124,558,993   135,767,767 55 6,978  
Catg J Exception Values: 4,850,326   4,889,478      
Catg D1 Exception Values: 9,893,001   10,257,952      
Total Test Values (4): 139,302,320   150,915,197      

Margin of Error

Margin of Error Percent: 6.1250167
Margin of Error Value: 9,243,581

Confidence Interval Values (5)

Local Test Value: 139,302,320 (Outside Confidence Interval)
State Lower Limit: 141,671,616 (State Test Value minus Margin of Error Percent)
State Upper Limit: 160,158,778 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 146,357,182 (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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