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2009 Confidence Interval Detail
034/Cass
034-902/Avinger ISD

Category Summary

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

Stratum
Variance
A 7,367,900 0.9389 7,847,375 15 156 .029165841
A 7,569,630 0.9380 8,069,968 13 79 .017534536
A 7,944,330 0.9727 8,167,297 12 45 .035448345
A 7,265,690 1.0354 7,017,278 10 24 .018649351
D3 16,834,850 1.0245 16,432,260 25 1,012 .191576632
Random Totals: 46,982,400   47,534,178 75 1,316  
Catg J Exception Values: 2,183,001   2,343,926      
Catg D1 Exception Values: 4,656,712   4,578,773      
Total Test Values (4): 53,822,113   54,456,877      

Margin of Error

Margin of Error Percent: 5.6588335
Margin of Error Value: 3,081,624

Confidence Interval Values (5)

State Lower Limit: 51,375,253 (State Test Value minus Margin of Error Percent)
Local Test Value: 53,822,113 (Within Confidence Interval)
State Upper Limit: 57,538,501 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,472,603 (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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