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2007 Confidence Interval Detail
019/Bowie
019-907/Texarkana ISD

Category Summary

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

Stratum
Variance
A 165,344,523 0.9738 169,793,102 51 3,635 .030658574
A 165,278,896 0.9894 167,049,622 59 1,901 .006316145
A 165,255,517 0.9523 173,533,043 56 1,295 .004031890
A 165,274,564 0.9912 166,741,893 42 651 .002550601
F1 120,958,300 0.9456 127,916,984 8 532 .005891566
F1 122,035,330 0.9553 127,745,556 7 143 .003221275
F1 119,925,232 0.9141 131,194,871 6 53 .016238072
F1 120,829,509 0.9443 127,956,697 6 15 .000891477
L1 60,942,743 1.0701 56,950,512 7 583 .000705938
L1 61,414,265 1.0332 59,440,829 7 142 .000388549
L1 62,557,497 1.0080 62,061,009 6 51 .002217820
L1 58,587,304 1.0002 58,575,589 5 14 .000040199
Random Totals: 1,388,403,680   1,428,959,707 260 9,015  
Catg D1 Exception Values: 769,470   752,400      
Total Test Values (4): 1,389,173,150   1,429,712,107      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 71,485,605

Confidence Interval Values (5)

State Lower Limit: 1,358,226,502 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,389,173,150 (Within Confidence Interval)
State Upper Limit: 1,501,197,712 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,730,906,443 (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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