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2006 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 98,744,107 1.0140 97,380,776 47 1,522 .033724990
A 98,754,312 0.9538 103,537,756 35 999 .019864478
A 98,738,458 0.9538 103,521,134 35 806 .014005456
A 98,596,752 0.9145 107,814,928 20 523 .013298156
D3 47,241,562 1.0120 46,681,385 14 1,485 .092816377
F1 34,409,757 1.0916 31,522,313 7 202 .006380504
F1 35,113,812 0.9869 35,579,909 8 38 .021246924
F1 46,359,582 1.0048 46,138,119 3 4 .009239425
L1 11,434,821 1.0132 11,285,848 8 214 .010058181
L1 11,696,972 1.0183 11,486,764 6 46 .001366246
L1 14,062,149 0.9799 14,350,596 4 5 .000631268
Random Totals: 595,152,284   609,299,528 187 5,844  
Catg D1 Exception Values: 9,542,827   9,827,078      
Catg F1 Exception Values: 29,900,000   29,659,750      
Catg L1 Exception Values: 9,683,503   8,931,428      
Total Test Values (4): 644,278,614   657,717,784      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 32,885,889

Confidence Interval Values (5)

State Lower Limit: 624,831,895 (State Test Value minus Margin of Error Percent)
Local Test Value: 644,278,614 (Within Confidence Interval)
State Upper Limit: 690,603,673 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 691,664,200 (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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