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2008 Confidence Interval Detail
043/Collin
043-911/Princeton ISD

Category Summary

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

Stratum
Variance
A 87,769,280 0.9807 89,496,564 25 1,344 .001898827
A 98,421,440 0.9846 99,960,837 22 908 .006568253
A 91,471,861 1.0211 89,581,687 25 620 .005902093
A 88,809,654 0.9801 90,612,850 24 438 .005980148
D3 66,867,101 1.0437 64,067,357 28 1,419 .003761777
Random Totals: 433,339,336   433,719,295 124 4,729  
Catg D1 Exception Values: 2,330,801   2,413,639      
Total Test Values (4): 435,670,137   436,132,934      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 21,806,647

Confidence Interval Values (5)

State Lower Limit: 414,326,287 (State Test Value minus Margin of Error Percent)
Local Test Value: 435,670,137 (Within Confidence Interval)
State Upper Limit: 457,939,581 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 500,288,870 (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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