Texas Comptroller of Public Accounts

Texas Comptroller of Public Accounts, Glenn Hegar

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2009 Confidence Interval Detail
081/Freestone
081-906/Dew ISD

Category Summary

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

Stratum
Variance
D3 29,010,660 1.0141 28,607,297 11 1,610 .002241790
G1 82,935,358 0.9861 84,104,409 11 157 .015258193
G1 83,360,086 1.0457 79,717,018 11 87 .004454143
G1 83,113,370 1.0223 81,300,372 8 56 .006491804
G1 81,036,353 1.0039 80,721,539 7 29 .006548485
Random Totals: 359,455,827   354,450,635 48 1,939  
Catg J Exception Values: 2,132,710   2,138,184      
Catg D1 Exception Values: 2,941,100   2,386,921      
Total Test Values (4): 364,529,637   358,975,740      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 17,948,787

Confidence Interval Values (5)

State Lower Limit: 341,026,953 (State Test Value minus Margin of Error Percent)
Local Test Value: 364,529,637 (Within Confidence Interval)
State Upper Limit: 376,924,527 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 501,279,918 (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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