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2006 Confidence Interval Detail
022/Brewster
022-902/Marathon ISD

Category Summary

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

Stratum
Variance
A 2,961,502 0.9584 3,090,048 15 114 .000491876
A 2,960,865 0.9729 3,043,340 16 63 .000423789
A 2,965,230 0.9708 3,054,419 15 39 .000455082
A 2,957,101 0.9813 3,013,453 13 19 .000872478
D3 7,904,197 0.9601 8,232,681 19 621 .001757029
F1 682,703 0.9679 705,345 5 20 .000831574
F1 730,881 0.9644 757,861 7 9 .000114552
F1 820,066 0.9765 839,801 3 4 .000636279
Random Totals: 21,982,545   22,736,948 93 889  
Catg J Exception Values: 12,534,783   12,303,814      
Catg D1 Exception Values: 13,501,369   16,429,134      
Catg F1 Exception Values: 680,975   694,455      
Total Test Values (4): 48,699,672   52,164,351      

Margin of Error

Margin of Error Percent: 5.0000009
Margin of Error Value: 2,608,218

Confidence Interval Values (5)

Local Test Value: 48,699,672 (Outside Confidence Interval)
State Lower Limit: 49,556,133 (State Test Value minus Margin of Error Percent)
State Upper Limit: 54,772,569 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,993,932 (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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