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2011 Confidence Interval Detail
221/Taylor
221-912/Wylie ISD

Category Summary

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

Stratum
Variance
A 206,083,704 1.0095 204,144,333 41 1,822 .004324354
A 222,357,161 1.0002 222,312,698 46 1,359 .001877531
A 236,216,961 0.9819 240,571,302 57 1,106 .002484352
A 234,578,818 0.9863 237,837,187 43 663 .002356078
D3 157,446,204 0.9707 162,198,624 33 2,846 .005243547
F1 20,887,787 1.0252 20,374,353 10 78 .009519168
F1 19,564,054 1.0222 19,139,165 7 22 .007298369
L1 14,694,741 1.0017 14,669,802 10 138 .000703419
L1 9,561,270 0.9949 9,610,282 11 17 .000977915
L1 30,598,255 0.9990 30,628,884 6 10 .000382008
Random Totals: 1,151,988,955   1,161,486,630 264 8,061  
Catg D1 Exception Values: 5,805,322   6,138,326      
Catg F1 Exception Values: 84,383,251   84,319,152      
Catg L1 Exception Values: 20,227,550   20,838,624      
Total Test Values (4): 1,262,405,078   1,272,782,732      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 63,639,137

Confidence Interval Values (5)

State Lower Limit: 1,209,143,595 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,262,405,078 (Within Confidence Interval)
State Upper Limit: 1,336,421,869 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,291,023,889 (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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