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2012 Confidence Interval Detail
003/Angelina
003-903/Lufkin ISD

Category Summary

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

Stratum
Variance
A 268,924,365 0.9328 288,297,990 23 4,912 .012594427
A 266,294,340 0.9870 269,801,763 43 2,769 .010282275
A 279,707,444 1.0211 273,927,572 26 1,871 .006053352
A 301,044,664 1.0167 296,099,797 29 1,028 .003166013
F1 108,780,616 0.8573 126,887,456 10 544 .051337627
F1 111,254,861 0.9923 112,118,171 9 145 .055570974
F1 99,760,188 0.8808 113,260,886 8 49 .020774514
F1 104,452,380 0.8475 123,247,646 5 11 .018758440
L1 53,828,020 0.9868 54,548,054 11 557 .023334178
L1 59,169,330 1.0482 56,448,512 9 124 .067892264
L1 45,963,070 1.0135 45,350,834 8 26 .000945348
Random Totals: 1,699,179,278   1,759,988,681 181 12,036  
Catg J Exception Values: 69,599,150   68,100,457      
Catg D1 Exception Values: 9,414,307   9,431,536      
Catg L1 Exception Values: 34,089,070   33,775,640      
Total Test Values (4): 1,812,281,805   1,871,296,314      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 93,564,816

Confidence Interval Values (5)

State Lower Limit: 1,777,731,498 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,812,281,805 (Within Confidence Interval)
State Upper Limit: 1,964,861,130 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,179,040,257 (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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