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2007 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 241,874,818 0.8762 276,049,781 80 5,044 .040017257
A 241,445,814 0.9378 257,459,814 93 2,793 .015612547
A 241,672,555 0.9333 258,944,128 102 1,863 .014974178
A 241,561,002 0.9730 248,264,134 74 970 .012168999
F1 86,007,108 0.6769 127,060,287 20 568 .227599950
F1 85,925,305 0.9435 91,070,806 17 149 .034183909
F1 86,072,089 0.8321 103,439,597 15 50 .131923263
F1 84,931,005 0.8518 99,707,684 6 9 .045155685
L1 60,152,246 1.0211 58,909,261 8 610 .005626044
L1 60,475,814 1.0066 60,079,291 8 117 .020343492
L1 63,977,689 0.9908 64,571,749 7 31 .024185997
L1 55,468,571 1.0106 54,886,771 3 4 .000640953
Random Totals: 1,549,564,016   1,700,443,303 433 12,208  
Catg J Exception Values: 89,538,706   99,286,545      
Catg D1 Exception Values: 9,942,350   9,634,846      
Total Test Values (4): 1,649,045,072   1,809,364,694      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 90,468,235

Confidence Interval Values (5)

Local Test Value: 1,649,045,072 (Outside Confidence Interval)
State Lower Limit: 1,718,896,459 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,899,832,929 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,919,694,399 (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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