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2008 Confidence Interval Detail
043/Collin
043-917/Blue Ridge ISD

Category Summary

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

Stratum
Variance
A 20,494,859 0.9619 21,306,642 10 395 .015269907
A 21,243,598 0.9936 21,380,433 9 192 .001636070
D3 65,957,635 1.0272 64,211,093 38 2,425 .021662157
Random Totals: 107,696,092   106,898,168 57 3,012  
Catg J Exception Values: 8,098,454   8,735,883      
Catg D1 Exception Values: 4,067,787   3,891,201      
Total Test Values (4): 119,862,333   119,525,252      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 5,976,263

Confidence Interval Values (5)

State Lower Limit: 113,548,989 (State Test Value minus Margin of Error Percent)
Local Test Value: 119,862,333 (Within Confidence Interval)
State Upper Limit: 125,501,515 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 116,448,884 (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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