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2008 Confidence Interval Detail
187/Polk
187-903/Goodrich ISD

Category Summary

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

Stratum
Variance
A 9,542,552 0.8704 10,963,410 22 320 .093633673
A 9,919,344 0.8920 11,120,341 22 185 .033979415
A 10,206,381 0.9312 10,960,461 21 130 .014308924
A 10,737,414 1.0113 10,617,437 22 78 .013227668
D3 8,169,960 0.9927 8,230,039 15 422 .052509842
G1 9,814,560 0.9758 10,057,963 15 25 .037209507
Random Totals: 58,390,211   61,949,651 117 1,160  
Catg J Exception Values: 3,336,700   3,475,665      
Catg D1 Exception Values: 3,606,141   3,681,895      
Catg G1 Exception Values: 3,048,880   2,736,353      
Total Test Values (4): 68,381,932   71,843,564      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,592,178

Confidence Interval Values (5)

State Lower Limit: 68,251,386 (State Test Value minus Margin of Error Percent)
Local Test Value: 68,381,932 (Within Confidence Interval)
State Upper Limit: 75,435,742 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 98,097,131 (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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