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2009 Confidence Interval Detail
212/Smith
092-901/Gladewater ISD

Category Summary

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

Stratum
Variance
A 9,577,097 0.7782 12,306,730 7 219 .024517208
A 8,539,889 0.8714 9,800,194 7 98 .073734682
A 9,150,760 0.9668 9,464,998 6 70 .002206287
A 9,148,088 1.0127 9,033,364 6 47 .001719996
D3 31,431,452 1.0042 31,299,992 15 1,520 .083385014
Random Totals: 67,847,286   71,905,278 41 1,954  
Catg D1 Exception Values: 4,102,130   4,237,000      
Total Test Values (4): 71,949,416   76,142,278      

Margin of Error

Margin of Error Percent: 6.9837784
Margin of Error Value: 5,317,608

Confidence Interval Values (5)

State Lower Limit: 70,824,670 (State Test Value minus Margin of Error Percent)
Local Test Value: 71,949,416 (Within Confidence Interval)
State Upper Limit: 81,459,886 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 75,450,975 (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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