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2008 Confidence Interval Detail
019/Bowie
019-905/New Boston ISD

Category Summary

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

Stratum
Variance
A 33,183,307 1.0252 32,367,642 10 782 .031849103
A 37,492,039 0.9800 38,257,183 13 532 .013637990
A 37,579,368 1.0281 36,552,250 10 373 .004988044
A 39,634,107 0.9611 41,238,276 11 241 .010809261
D3 51,671,711 1.0225 50,534,681 20 1,556 .336880199
F1 12,613,804 0.9188 13,728,563 7 106 .028463396
F1 11,902,002 0.9011 13,208,303 7 29 .028546516
F1 19,983,921 1.0081 19,823,352 4 17 .006378308
L1 4,760,495 1.0450 4,555,498 8 95 .006310349
L1 4,510,541 1.0907 4,135,455 5 21 .017821199
L1 4,955,141 1.0171 4,871,833 4 8 .001159658
Random Totals: 258,286,436   259,273,036 99 3,760  
Catg D1 Exception Values: 5,455,666   5,806,290      
Catg F1 Exception Values: 10,045,968   10,061,958      
Catg L1 Exception Values: 9,450,590   9,888,295      
Total Test Values (4): 283,238,660   285,029,579      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 14,251,479

Confidence Interval Values (5)

State Lower Limit: 270,778,100 (State Test Value minus Margin of Error Percent)
Local Test Value: 283,238,660 (Within Confidence Interval)
State Upper Limit: 299,281,058 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 295,610,671 (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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