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2009 Confidence Interval Detail
166/Milam
014-902/Bartlett ISD

Category Summary

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

Stratum
Variance
A 1,417,330 0.9538 1,485,982 15 46 .029186787
A 1,189,150 0.9680 1,228,461 12 23 .077558470
A 1,775,820 0.9874 1,798,481 16 22 .030125149
A 1,470,090 0.9442 1,556,969 7 10 .035293697
D3 7,255,470 1.0394 6,980,441 20 383 .015430002
Random Totals: 13,107,860   13,050,334 70 484  
Catg D1 Exception Values: 1,091,550   971,143      
Total Test Values (4): 14,199,410   14,021,477      

Margin of Error

Margin of Error Percent: 5.0000011
Margin of Error Value: 701,074

Confidence Interval Values (5)

State Lower Limit: 13,320,403 (State Test Value minus Margin of Error Percent)
Local Test Value: 14,199,410 (Within Confidence Interval)
State Upper Limit: 14,722,551 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,209,609 (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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