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2011 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 1,293,910 0.8934 1,448,299 10 40 .061713404
A 1,488,580 0.9604 1,549,958 10 26 .046467953
A 1,460,990 0.9816 1,488,376 10 17 .034259570
A 1,262,500 1.1080 1,139,440 5 9 .075755224
D3 7,915,930 0.9798 8,079,128 16 378 .085363431
Random Totals: 13,421,910   13,705,201 51 470  
Catg D1 Exception Values: 956,420   951,195      
Total Test Values (4): 14,378,330   14,656,396      

Margin of Error

Margin of Error Percent: 8.2506300
Margin of Error Value: 1,209,245

Confidence Interval Values (5)

State Lower Limit: 13,447,151 (State Test Value minus Margin of Error Percent)
Local Test Value: 14,378,330 (Within Confidence Interval)
State Upper Limit: 15,865,641 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,097,329 (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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