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2011 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 386,146,731 0.9911 389,614,298 35 5,477 .025548728
A 397,013,024 0.9910 400,618,591 48 3,144 .011721523
A 425,542,988 0.9940 428,111,658 55 2,422 .009211588
A 425,432,440 0.9701 438,544,934 34 1,250 .027177592
F1 192,581,440 0.8093 237,960,509 11 858 .052219646
F1 197,813,018 0.9803 201,788,246 10 242 .011060830
F1 183,920,066 0.8854 207,725,396 11 78 .033902539
F1 177,235,380 0.8357 212,080,148 8 20 .105558546
L1 117,771,480 1.0200 115,462,235 10 997 .014598839
L1 111,745,060 1.0216 109,382,400 11 209 .028226552
L1 125,097,630 0.9804 127,598,562 9 76 .019035497
L1 118,562,060 1.0340 114,663,501 7 19 .002217472
Random Totals: 2,858,861,317   2,983,550,478 249 14,792  
Catg D1 Exception Values: 4,129,307   3,117,589      
Total Test Values (4): 2,862,990,624   2,986,668,067      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 149,333,403

Confidence Interval Values (5)

State Lower Limit: 2,837,334,664 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,862,990,624 (Within Confidence Interval)
State Upper Limit: 3,136,001,470 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,797,557,876 (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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