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2008 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 165,149,901 0.9486 174,098,567 46 3,501 .015837307
A 172,782,887 0.9666 178,753,245 45 1,997 .010259861
A 189,378,693 0.9718 194,874,144 44 1,501 .007345745
A 181,123,012 0.9756 185,652,944 18 750 .002631737
F1 125,462,807 0.9260 135,488,992 8 549 .003085080
F1 138,365,765 1.0061 137,526,851 7 158 .015531636
F1 141,902,969 1.0999 129,014,428 6 63 .019245981
F1 149,321,051 0.9462 157,811,299 5 20 .015623742
L1 59,411,884 1.0304 57,659,049 7 553 .002594962
L1 64,418,589 1.0230 62,970,273 7 134 .005665260
L1 76,099,127 0.9946 76,512,293 8 48 .001724706
L1 35,482,768 1.0438 33,993,838 4 7 .001585988
Random Totals: 1,498,899,453   1,524,355,923 205 9,281  
Catg D1 Exception Values: 737,804   809,292      
Total Test Values (4): 1,499,637,257   1,525,165,215      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 76,258,261

Confidence Interval Values (5)

State Lower Limit: 1,448,906,954 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,499,637,257 (Within Confidence Interval)
State Upper Limit: 1,601,423,476 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,816,953,020 (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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