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2008 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 103,854,182 0.9789 106,092,739 39 1,491 .036729027
A 107,594,272 0.9783 109,980,857 38 1,061 .018569501
A 112,107,846 1.0014 111,951,114 52 883 .009109856
A 133,672,024 0.9410 142,053,160 32 699 .014820835
D3 47,831,699 0.8734 54,764,940 10 1,511 .026246395
F1 31,299,926 0.9876 31,692,918 8 191 .145071916
F1 31,435,745 1.1017 28,533,852 7 62 .045476736
F1 41,180,185 0.9980 41,262,710 5 20 .000254814
L1 13,156,768 0.9594 13,713,538 7 213 .005330528
L1 15,955,386 0.9903 16,111,669 7 45 .001504779
L1 15,768,036 1.0064 15,667,762 4 7 .003549724
Random Totals: 653,856,069   671,825,259 209 6,183  
Catg D1 Exception Values: 10,761,709   9,501,234      
Catg F1 Exception Values: 22,360,962   23,872,934      
Total Test Values (4): 686,978,740   705,199,427      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 35,259,971

Confidence Interval Values (5)

State Lower Limit: 669,939,456 (State Test Value minus Margin of Error Percent)
Local Test Value: 686,978,740 (Within Confidence Interval)
State Upper Limit: 740,459,398 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 788,667,295 (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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