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2007 Confidence Interval Detail
198/Robertson
198-906/Mumford ISD

Category Summary

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

Stratum
Variance
D3 2,135,850 0.8272 2,582,024 10 226 .065837279
G1 11,975,572 0.9978 12,001,976 5 20 .000167430
G1 12,836,898 1.0144 12,654,671 4 10 .001345968
G1 12,046,359 1.1300 10,660,495 3 6 .012425158
Random Totals: 38,994,679   37,899,166 22 262  
Catg J Exception Values: 4,360,172   4,318,622      
Catg D1 Exception Values: 4,783,090   5,177,321      
Catg G1 Exception Values: 10,239,973   10,038,499      
Total Test Values (4): 58,377,914   57,433,608      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,871,680

Confidence Interval Values (5)

State Lower Limit: 54,561,928 (State Test Value minus Margin of Error Percent)
Local Test Value: 58,377,914 (Within Confidence Interval)
State Upper Limit: 60,305,288 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 62,422,845 (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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