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2009 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 4,715,880 1.0109 4,665,031 10 180 .015848547
A 4,329,900 0.9721 4,454,171 7 88 .008544953
A 4,603,780 1.0087 4,564,073 7 64 .003369901
A 5,030,090 1.0168 4,946,981 7 38 .016446954
D3 32,686,750 1.0595 30,851,109 11 2,389 .013582067
Random Totals: 51,366,400   49,481,365 42 2,759  
Catg D1 Exception Values: 13,173,600   13,250,536      
Total Test Values (4): 64,540,000   62,731,901      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,136,595

Confidence Interval Values (5)

State Lower Limit: 59,595,306 (State Test Value minus Margin of Error Percent)
Local Test Value: 64,540,000 (Within Confidence Interval)
State Upper Limit: 65,868,496 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 57,373,906 (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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