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2010 Confidence Interval Detail
246/Williamson
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 6,068,847 0.9709 6,250,744 9 152 .009420017
A 5,555,268 0.9588 5,793,980 9 84 .004206065
A 4,346,374 0.8859 4,906,168 9 46 .012133570
A 3,639,767 0.9224 3,945,975 8 26 .004838609
D3 5,287,434 1.0372 5,097,796 21 419 .037785875
F1 777,129 0.9815 791,777 6 25 .002618592
F1 735,815 0.9978 737,437 7 12 .000941505
F1 655,352 0.9786 669,683 4 5 .000346389
Random Totals: 27,065,986   28,193,560 73 769  
Catg J Exception Values: 2,480,020   2,763,693      
Catg D1 Exception Values: 6,313,259   5,422,141      
Catg F1 Exception Values: 492,385   506,245      
Total Test Values (4): 36,351,650   36,885,639      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 1,844,282

Confidence Interval Values (5)

State Lower Limit: 35,041,357 (State Test Value minus Margin of Error Percent)
Local Test Value: 36,351,650 (Within Confidence Interval)
State Upper Limit: 38,729,921 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 36,886,975 (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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