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2009 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 11,190,741 0.9489 11,793,383 16 258 .024958064
A 9,782,184 0.8674 11,277,593 11 139 .016519308
A 10,065,904 0.9023 11,155,828 14 106 .014125648
A 10,174,782 0.9155 11,113,907 8 67 .015407542
D3 68,725,672 0.9809 70,063,892 20 2,482 .014834148
Random Totals: 109,939,283   115,404,603 69 3,052  
Catg J Exception Values: 7,862,151   8,170,745      
Catg D1 Exception Values: 4,292,391   3,908,994      
Total Test Values (4): 122,093,825   127,484,342      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,374,217

Confidence Interval Values (5)

State Lower Limit: 121,110,125 (State Test Value minus Margin of Error Percent)
Local Test Value: 122,093,825 (Within Confidence Interval)
State Upper Limit: 133,858,559 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 119,687,663 (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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