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2006 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 309,758,968 0.9152 338,460,411 71 5,515 .050117464
A 309,525,918 0.9202 336,368,092 73 3,090 .018199687
A 309,687,439 0.9480 326,674,514 70 2,139 .013066717
A 309,474,118 0.9406 329,017,774 64 1,049 .028685489
F1 160,776,741 0.8528 188,528,073 16 803 .043157005
F1 160,608,251 1.0039 159,984,312 10 220 .018568706
F1 162,095,823 0.9251 175,219,785 10 70 .045015740
F1 158,569,617 0.9908 160,042,003 7 14 .002128281
G1 49,934,917 1.0278 48,584,274 9 148 .010197773
G1 50,298,140 1.1176 45,005,494 9 70 .013999276
G1 49,354,990 1.0441 47,270,367 8 43 .010376372
G1 49,209,259 1.0992 44,768,249 7 25 .004427009
L1 102,583,491 1.1914 86,103,316 10 1,051 .064450422
L1 102,899,750 1.0457 98,402,745 10 244 .008290590
L1 102,878,836 0.9369 109,807,702 9 75 .021298865
L1 101,182,989 1.1617 87,099,069 7 21 .050262346
Random Totals: 2,488,839,247   2,581,336,180 390 14,577  
Catg D1 Exception Values: 4,315,000   3,891,979      
Total Test Values (4): 2,493,154,247   2,585,228,159      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 129,261,408

Confidence Interval Values (5)

State Lower Limit: 2,455,966,751 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,493,154,247 (Within Confidence Interval)
State Upper Limit: 2,714,489,567 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,036,468,003 (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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