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2009 Confidence Interval Detail
086/Gillespie
086-901/Fredericksburg ISD

Category Summary

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

Stratum
Variance
A 267,255,502 0.9847 271,408,045 50 1,899 .007916338
A 281,709,883 1.0302 273,451,643 37 1,410 .010705433
A 264,570,336 0.9630 274,735,551 34 1,005 .013939033
A 258,183,791 0.9930 260,003,818 17 623 .002922632
D3 776,219,765 0.9997 776,452,701 65 15,012 .019229664
F1 120,566,922 0.8879 135,788,852 7 537 .017614888
F1 97,854,290 0.9629 101,624,561 7 176 .026808545
F1 101,079,213 1.0548 95,827,847 6 85 .007514784
F1 104,920,184 1.0653 98,488,861 6 29 .003822331
Random Totals: 2,272,359,886   2,287,781,879 229 20,776  
Catg D1 Exception Values: 31,725,378   33,478,628      
Total Test Values (4): 2,304,085,264   2,321,260,507      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 116,063,025

Confidence Interval Values (5)

State Lower Limit: 2,205,197,482 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,304,085,264 (Within Confidence Interval)
State Upper Limit: 2,437,323,532 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,280,446,086 (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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