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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 0.7638 12,493,522 24 320 .066814826
A 9,919,344 0.8274 11,988,571 23 185 .045357576
A 10,206,381 0.8487 12,025,900 23 130 .022233837
A 10,737,414 0.9574 11,215,181 22 78 .011931507
D3 8,169,960 0.9593 8,516,585 15 422 .047580343
G1 9,814,560 0.9020 10,880,887 15 25 .088131073
Random Totals: 58,390,211   67,120,646 122 1,160  
Catg J Exception Values: 3,336,700   3,583,179      
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   77,122,073      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 3,856,104

Confidence Interval Values (5)

Local Test Value: 68,381,932 (Outside Confidence Interval)
State Lower Limit: 73,265,969 (State Test Value minus Margin of Error Percent)
State Upper Limit: 80,978,177 (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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