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2009 Confidence Interval Detail
246/Williamson
246-902/Florence ISD

Category Summary

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

Stratum
Variance
A 25,421,886 0.8208 30,972,083 17 388 .074058258
A 22,206,026 1.0052 22,091,152 15 200 .014395660
A 28,199,380 0.9678 29,137,611 14 152 .008045041
A 22,074,573 0.9692 22,776,076 14 73 .003372142
D3 75,067,999 1.0300 72,881,552 23 1,790 .007794265
F1 2,972,079 0.9677 3,071,281 11 36 .023584514
F1 2,206,840 1.0063 2,193,024 8 15 .005938520
F1 3,489,148 1.0321 3,380,630 7 15 .026848160
F1 3,850,907 1.1044 3,486,877 4 7 .019703125
Random Totals: 185,488,838   189,990,286 113 2,676  
Catg D1 Exception Values: 4,633,016   3,392,670      
Total Test Values (4): 190,121,854   193,382,956      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 9,669,148

Confidence Interval Values (5)

State Lower Limit: 183,713,808 (State Test Value minus Margin of Error Percent)
Local Test Value: 190,121,854 (Within Confidence Interval)
State Upper Limit: 203,052,104 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 217,832,849 (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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