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2008 Confidence Interval Detail
043/Collin
043-918/Community ISD

Category Summary

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

Stratum
Variance
A 59,938,843 1.0992 54,529,515 15 868 .026882851
A 73,004,183 0.9971 73,216,511 25 513 .003120614
A 75,921,348 1.0054 75,513,575 24 415 .001627002
A 69,593,229 0.9800 71,013,499 22 278 .004268014
C 6,837,975 1.0442 6,548,530 10 406 .107995160
C 3,455,412 0.9919 3,483,629 9 106 .005740154
C 2,080,149 0.9538 2,180,907 10 41 .096837182
C 5,950,831 1.0363 5,742,383 7 36 .006470779
D3 113,788,614 1.0451 108,878,207 40 2,686 .018964566
Random Totals: 410,570,584   401,106,756 162 5,349  
Catg D1 Exception Values: 3,746,383   3,850,571      
Total Test Values (4): 414,316,967   404,957,327      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 20,247,866

Confidence Interval Values (5)

State Lower Limit: 384,709,461 (State Test Value minus Margin of Error Percent)
Local Test Value: 414,316,967 (Within Confidence Interval)
State Upper Limit: 425,205,193 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 434,813,826 (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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