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2012 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 4,568,979 0.8781 5,203,256 9 167 .014305001
A 4,870,123 1.0918 4,460,637 9 94 .018733474
A 4,888,817 1.0616 4,605,140 9 66 .004153225
A 5,115,864 0.9506 5,381,721 8 36 .011065847
D3 34,377,391 0.9385 36,630,145 15 2,424 .009442740
Random Totals: 53,821,174   56,280,899 50 2,787  
Catg D1 Exception Values: 12,644,226   12,854,757      
Total Test Values (4): 66,465,400   69,135,656      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 3,456,783

Confidence Interval Values (5)

State Lower Limit: 65,678,873 (State Test Value minus Margin of Error Percent)
Local Test Value: 66,465,400 (Within Confidence Interval)
State Upper Limit: 72,592,439 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 61,211,105 (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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