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2006 Confidence Interval Detail
020/Brazoria
020-906/Sweeny ISD

Category Summary

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

Stratum
Variance
A 64,742,176 1.0086 64,190,141 13 1,225 .011601981
A 64,750,047 0.9625 67,272,776 27 721 .010607903
A 64,720,360 0.9912 65,294,956 15 507 .001744790
A 64,578,684 1.0027 64,404,791 14 310 .014236732
D3 44,888,730 0.8553 52,483,024 10 2,329 .004907335
G1 75,847,336 0.9906 76,567,066 15 28 .001365572
Random Totals: 379,527,333   390,212,754 94 5,120  
Catg J Exception Values: 12,624,754   13,135,217      
Catg D1 Exception Values: 3,528,820   3,889,219      
Catg G1 Exception Values: 86,914,631   97,940,585      
Total Test Values (4): 482,595,538   505,177,775      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 25,258,889

Confidence Interval Values (5)

State Lower Limit: 479,918,886 (State Test Value minus Margin of Error Percent)
Local Test Value: 482,595,538 (Within Confidence Interval)
State Upper Limit: 530,436,664 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,566,797,791 (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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