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2007 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 340,826,949 0.9595 355,213,079 68 5,574 .041007601
A 340,501,362 0.9741 349,554,832 73 3,073 .029038633
A 340,909,582 0.9710 351,091,228 76 2,124 .012389866
A 340,311,741 0.9829 346,232,314 70 1,063 .019452723
F1 173,172,313 0.9389 184,441,701 7 813 .075392208
F1 172,957,927 0.9206 187,875,219 10 220 .018139715
F1 176,803,244 0.9752 181,299,471 8 69 .012911571
F1 169,268,146 0.9651 175,389,230 7 15 .013823274
G1 42,813,620 0.9605 44,574,305 7 165 .007740969
G1 42,875,630 0.9724 44,092,585 6 82 .028987716
G1 43,181,019 1.0855 39,779,842 6 46 .003255672
G1 41,949,640 1.0077 41,629,096 5 24 .011980848
L1 107,788,913 0.9472 113,797,417 9 1,082 .019033735
L1 108,241,246 0.9559 113,234,905 9 244 .075383280
L1 107,437,672 1.1026 97,440,297 8 74 .016857347
L1 107,134,138 1.0314 103,872,540 6 21 .000663665
Random Totals: 2,656,173,142   2,729,518,061 375 14,689  
Catg D1 Exception Values: 3,926,370   3,298,264      
Total Test Values (4): 2,660,099,512   2,732,816,325      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 136,640,816

Confidence Interval Values (5)

State Lower Limit: 2,596,175,509 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,660,099,512 (Within Confidence Interval)
State Upper Limit: 2,869,457,141 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,317,976,580 (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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