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2007 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 10,490,377 1.0680 9,822,450 14 224 .018205605
A 10,518,174 0.9813 10,718,612 10 144 .007429095
A 10,468,108 0.9901 10,572,779 7 110 .007214267
A 10,456,853 0.9614 10,876,693 10 75 .013154616
D3 63,728,028 1.0216 62,380,607 30 2,407 .096924338
Random Totals: 105,661,540   104,371,141 71 2,960  
Catg J Exception Values: 8,800,484   9,272,563      
Catg D1 Exception Values: 4,235,346   3,860,433      
Total Test Values (4): 118,697,370   117,504,137      

Margin of Error

Margin of Error Percent: 6.0875610
Margin of Error Value: 7,153,136

Confidence Interval Values (5)

State Lower Limit: 110,351,001 (State Test Value minus Margin of Error Percent)
Local Test Value: 118,697,370 (Within Confidence Interval)
State Upper Limit: 124,657,273 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 116,619,474 (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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