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2009 Confidence Interval Detail
039/Clay
039-902/Henrietta ISD

Category Summary

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

Stratum
Variance
A 32,137,370 0.9692 33,158,657 15 772 .016764276
A 35,733,620 1.0118 35,316,881 15 458 .001491440
A 33,706,970 0.9584 35,170,044 8 301 .006966442
A 40,402,710 0.9636 41,928,923 9 231 .001817370
D3 38,028,370 0.9633 39,477,183 23 3,065 .006188430
G1 1,655,540 1.0524 1,573,109 4 12 .010918985
G1 1,699,950 1.0650 1,596,197 4 7 .001855745
G1 1,493,070 1.0050 1,485,642 2 3 .003011915
Random Totals: 184,857,600   189,706,636 80 4,849  
Catg J Exception Values: 48,372,870   47,027,561      
Catg D1 Exception Values: 18,640,760   17,476,114      
Catg G1 Exception Values: 19,720,690   19,531,907      
Total Test Values (4): 271,591,920   273,742,218      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,687,111

Confidence Interval Values (5)

State Lower Limit: 260,055,107 (State Test Value minus Margin of Error Percent)
Local Test Value: 271,591,920 (Within Confidence Interval)
State Upper Limit: 287,429,329 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 314,310,825 (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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