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2010 Confidence Interval Detail
246/Williamson
246-911/Taylor ISD

Category Summary

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

Stratum
Variance
A 109,684,848 0.9373 117,022,136 21 1,571 .020100395
A 108,191,057 0.9407 115,011,222 32 1,050 .008483197
A 105,036,114 0.9786 107,333,041 22 826 .004632788
A 124,281,897 0.9932 125,132,800 16 645 .004942028
D3 48,928,713 1.0211 47,917,651 19 1,542 .034155362
F1 36,393,065 1.0061 36,172,413 11 198 .005454161
F1 35,624,907 0.9749 36,542,114 8 55 .002080953
F1 36,981,464 0.9701 38,121,291 6 12 .001805998
L1 9,901,938 0.9964 9,937,714 9 163 .025602736
L1 10,354,517 1.0435 9,922,872 8 40 .003469117
L1 19,091,114 0.9770 19,540,547 6 13 .002521494
Random Totals: 644,469,634   662,653,801 158 6,115  
Catg J Exception Values: 21,968,418   22,819,915      
Catg D1 Exception Values: 13,937,002   11,919,878      
Catg F1 Exception Values: 52,898,470   51,656,000      
Catg L1 Exception Values: 19,435,740   21,880,624      
Total Test Values (4): 752,709,264   770,930,218      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 38,546,511

Confidence Interval Values (5)

State Lower Limit: 732,383,707 (State Test Value minus Margin of Error Percent)
Local Test Value: 752,709,264 (Within Confidence Interval)
State Upper Limit: 809,476,729 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 766,489,336 (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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