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2007 Confidence Interval Detail
166/Milam
166-904/Rockdale ISD

Category Summary

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

Stratum
Variance
A 36,786,527 0.8957 41,070,143 22 1,007 .088838377
A 36,774,377 0.9829 37,414,159 22 499 .062502056
A 36,767,274 0.9901 37,134,910 13 304 .015783173
A 36,759,536 1.0205 36,021,103 21 193 .013512487
D3 80,653,364 0.9657 83,518,033 22 3,679 .050462711
F1 9,363,750 0.9281 10,089,161 9 165 .013616606
F1 9,320,665 0.8849 10,533,015 7 50 .042017599
F1 9,663,833 0.6769 14,276,604 7 18 .440040728
Random Totals: 256,089,326   270,057,128 123 5,915  
Catg J Exception Values: 33,906,504   33,596,784      
Catg D1 Exception Values: 13,203,870   12,637,340      
Catg F1 Exception Values: 7,900,810   9,031,503      
Total Test Values (4): 311,100,510   325,322,755      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 16,266,138

Confidence Interval Values (5)

State Lower Limit: 309,056,617 (State Test Value minus Margin of Error Percent)
Local Test Value: 311,100,510 (Within Confidence Interval)
State Upper Limit: 341,588,893 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 724,853,160 (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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