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2007 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 32,297,000 0.9817 32,899,053 8 770 .004188577
A 32,225,944 0.9932 32,446,581 15 416 .001946708
A 32,294,398 1.0157 31,795,213 8 296 .005342173
A 32,191,126 1.0382 31,006,671 10 191 .005552954
D3 33,264,240 1.1289 29,466,064 14 3,023 .011706222
G1 1,753,590 1.0379 1,689,556 4 12 .012982267
G1 1,540,000 1.3148 1,171,281 3 5 .085600978
G1 1,594,170 0.9142 1,743,787 2 3 .001680539
Random Totals: 167,160,468   162,218,206 64 4,716  
Catg J Exception Values: 63,397,781   63,112,639      
Catg D1 Exception Values: 18,839,700   16,283,572      
Catg G1 Exception Values: 20,379,170   20,599,244      
Total Test Values (4): 269,777,119   262,213,661      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,110,683

Confidence Interval Values (5)

State Lower Limit: 249,102,978 (State Test Value minus Margin of Error Percent)
Local Test Value: 269,777,119 (Within Confidence Interval)
State Upper Limit: 275,324,344 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 298,622,522 (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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