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2007 Confidence Interval Detail
152/Lubbock
152-901/Lubbock ISD

Category Summary

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

Stratum
Variance
A 1,149,476,980 0.9222 1,246,450,857 75 17,891 .048089677
A 1,149,237,058 0.9754 1,178,221,302 75 11,600 .009774313
A 1,149,383,007 0.9887 1,162,519,477 75 8,150 .013250815
A 1,149,166,221 0.9375 1,225,777,302 74 4,096 .025856700
B 178,762,264 0.9094 196,571,656 80 1,494 .067057927
B 180,984,172 1.1052 163,756,942 7 366 .073336812
B 178,982,205 0.9733 183,892,125 6 37 .006962502
B 175,463,242 0.9606 182,660,048 4 7 .004337128
F1 418,170,911 0.9317 448,825,707 32 1,649 .038627010
F1 418,573,511 1.0341 404,770,826 7 449 .017091451
F1 418,128,418 1.0017 417,418,806 7 151 .007553060
F1 415,687,712 0.9449 439,927,730 6 34 .006217191
L1 216,806,189 1.0600 204,534,141 7 2,303 .005387545
L1 216,754,836 0.9915 218,613,047 7 366 .000466781
L1 216,945,402 0.9902 219,092,509 7 118 .001515819
L1 216,491,419 0.9938 217,842,040 6 30 .000701044
Random Totals: 7,849,013,547   8,110,874,515 475 48,741  
Catg D1 Exception Values: 3,436,986   2,306,859      
Total Test Values (4): 7,852,450,533   8,113,181,374      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 405,659,069

Confidence Interval Values (5)

State Lower Limit: 7,707,522,305 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,852,450,533 (Within Confidence Interval)
State Upper Limit: 8,518,840,443 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,953,239,386 (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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