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2009 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 35,456,260 1.0377 34,168,122 11 793 .016641234
A 35,720,478 1.0066 35,486,269 11 482 .008625846
A 40,743,318 0.9750 41,788,018 11 389 .012698956
A 42,360,209 1.0064 42,090,828 10 247 .002983500
D3 55,534,956 0.9490 58,519,448 23 1,894 .026438659
F1 13,477,166 0.8525 15,808,992 8 102 .095187345
F1 15,402,881 0.9293 16,574,713 7 32 .026255814
F1 12,009,821 0.8377 14,336,661 4 10 .088036966
L1 4,771,855 1.0958 4,354,677 7 106 .004300134
L1 4,613,266 1.1259 4,097,403 5 23 .012975108
L1 3,983,145 1.0816 3,682,641 4 9 .027541247
Random Totals: 264,073,355   270,907,772 101 4,087  
Catg D1 Exception Values: 5,979,074   5,033,896      
Catg F1 Exception Values: 12,248,056   13,231,357      
Catg L1 Exception Values: 8,801,334   8,586,145      
Total Test Values (4): 291,101,819   297,759,170      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 14,887,959

Confidence Interval Values (5)

State Lower Limit: 282,871,211 (State Test Value minus Margin of Error Percent)
Local Test Value: 291,101,819 (Within Confidence Interval)
State Upper Limit: 312,647,129 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 326,791,929 (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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