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2008 Confidence Interval Detail
092/Gregg
092-903/Longview ISD

Category Summary

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

Stratum
Variance
A 316,303,057 0.9340 338,654,237 57 5,157 .058486549
A 351,511,745 0.9921 354,310,800 48 3,181 .012243067
A 414,057,627 0.9924 417,228,564 76 2,634 .012972198
A 403,256,950 0.9817 410,774,116 61 1,310 .009618234
F1 181,922,280 0.9698 187,587,420 14 849 .041457292
F1 182,219,270 1.0074 180,880,752 9 227 .013006838
F1 188,332,840 0.9788 192,411,974 9 75 .019680955
F1 202,405,630 1.0191 198,612,138 7 21 .130993554
G1 47,384,238 0.9456 50,110,235 10 177 .006077312
G1 47,675,801 0.9789 48,703,444 8 81 .016713824
G1 48,144,881 0.9695 49,659,496 7 38 .012111789
G1 45,749,049 1.0383 44,061,494 6 20 .001567734
L1 107,833,930 1.4439 74,682,409 7 1,109 .262410769
L1 118,546,410 1.0689 110,905,052 7 244 .004495239
L1 110,502,990 1.0932 101,082,135 6 74 .015898859
L1 151,759,600 1.0163 149,325,593 5 29 .003611700
Random Totals: 2,917,606,298   2,908,989,859 337 15,226  
Catg D1 Exception Values: 4,169,430   3,814,733      
Total Test Values (4): 2,921,775,728   2,912,804,592      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 145,640,230

Confidence Interval Values (5)

State Lower Limit: 2,767,164,362 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,921,775,728 (Within Confidence Interval)
State Upper Limit: 3,058,444,822 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,642,684,485 (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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