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2009 Confidence Interval Detail
026/Burleson
026-902/Somerville ISD

Category Summary

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

Stratum
Variance
A 20,267,160 0.9123 22,215,455 32 2,074 .071966535
A 19,474,880 0.8850 22,005,514 24 522 .032978334
A 19,530,210 0.9539 20,474,064 23 326 .060195990
A 20,446,210 0.9977 20,493,345 21 196 .005486437
D3 30,738,580 1.0409 29,530,771 23 1,870 .132040151
F1 2,526,450 0.8894 2,840,623 9 59 .032410359
F1 2,476,670 0.6181 4,006,908 8 20 .075159875
F1 2,067,720 0.8321 2,484,942 5 9 .171665546
F1 2,411,680 0.7036 3,427,629 3 5 .043190847
G1 6,311,260 0.9017 6,999,290 6 28 .132653322
G1 6,307,090 0.9604 6,567,149 6 11 .046128033
G1 5,848,970 0.9304 6,286,511 3 6 .009413786
G1 5,971,510 1.0601 5,632,969 2 3 .000004198
Random Totals: 144,378,390   152,965,170 165 5,129  
Catg J Exception Values: 9,430,170   9,516,421      
Catg D1 Exception Values: 4,408,270   2,990,604      
Total Test Values (4): 158,216,830   165,472,195      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 8,273,610

Confidence Interval Values (5)

State Lower Limit: 157,198,585 (State Test Value minus Margin of Error Percent)
Local Test Value: 158,216,830 (Within Confidence Interval)
State Upper Limit: 173,745,805 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 194,053,843 (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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