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2008 Confidence Interval Detail
194/Red River
194-905/Detroit ISD

Category Summary

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

Stratum
Variance
A 4,578,290 0.8323 5,500,769 8 181 .017444351
A 4,589,890 0.9369 4,899,018 7 95 .022079778
A 4,608,450 1.0489 4,393,603 8 65 .022256886
A 4,921,370 1.0312 4,772,469 7 38 .012046434
D3 32,803,290 1.0691 30,683,089 41 2,368 .055415701
Random Totals: 51,501,290   50,248,948 71 2,747  
Catg D1 Exception Values: 12,098,790   12,927,981      
Total Test Values (4): 63,600,080   63,176,929      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,158,846

Confidence Interval Values (5)

State Lower Limit: 60,018,083 (State Test Value minus Margin of Error Percent)
Local Test Value: 63,600,080 (Within Confidence Interval)
State Upper Limit: 66,335,775 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 55,196,792 (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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