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2010 Confidence Interval Detail
043/Collin
043-914/Wylie ISD

Category Summary

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

Stratum
Variance
A 649,766,155 0.9785 664,043,081 25 5,040 .004648217
A 619,089,228 0.9996 619,336,963 25 3,889 .004423191
A 630,924,663 0.9980 632,189,041 25 3,216 .001403183
A 635,515,867 0.9948 638,837,824 25 2,351 .003303110
F1 46,446,745 0.8574 54,171,618 10 95 .020986521
F1 51,873,358 0.9311 55,711,908 10 34 .010356275
F1 29,282,516 0.9709 30,160,177 6 9 .007000099
F1 56,892,240 0.9318 61,056,278 4 6 .013805625
L1 27,245,938 0.9561 28,496,954 10 209 .048731112
L1 43,476,439 0.9559 45,482,204 9 26 .002052148
L1 12,273,335 1.0795 11,369,463 2 2 .012113013
L1 53,730,089 0.9935 54,081,620 2 3 .001163326
Random Totals: 2,856,516,573   2,894,937,131 153 14,880  
Catg J Exception Values: 44,121,972   41,251,358      
Catg D1 Exception Values: 760,261   723,298      
Total Test Values (4): 2,901,398,806   2,936,911,787      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 146,845,589

Confidence Interval Values (5)

State Lower Limit: 2,790,066,198 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,901,398,806 (Within Confidence Interval)
State Upper Limit: 3,083,757,376 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,152,341,542 (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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