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2008 Confidence Interval Detail
043/Collin
043-902/Anna ISD

Category Summary

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

Stratum
Variance
A 84,332,777 0.9700 86,941,007 24 883 .008820471
A 88,601,599 0.9889 89,596,116 24 715 .007042352
A 104,433,372 0.9928 105,190,745 21 711 .003197456
A 84,466,339 1.0177 82,997,287 25 425 .005758998
D3 86,255,739 1.0250 84,151,940 25 1,807 .071854914
Random Totals: 448,089,826   448,877,095 119 4,541  
Catg D1 Exception Values: 3,743,513   3,732,523      
Total Test Values (4): 451,833,339   452,609,618      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 22,630,481

Confidence Interval Values (5)

State Lower Limit: 429,979,137 (State Test Value minus Margin of Error Percent)
Local Test Value: 451,833,339 (Within Confidence Interval)
State Upper Limit: 475,240,099 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 521,658,437 (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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