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2007 Confidence Interval Detail
152/Lubbock
152-903/Slaton ISD

Category Summary

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

Stratum
Variance
A 38,599,602 0.7801 49,480,326 18 1,078 .070971790
A 38,584,732 0.9117 42,321,742 23 548 .072771810
A 38,681,768 0.8850 43,708,212 21 297 .093736390
A 38,483,193 0.9413 40,883,027 14 124 .015887277
D3 11,270,234 0.9658 11,669,325 11 694 .004248152
F1 4,283,442 1.2620 3,394,170 7 107 .132005318
F1 4,309,431 0.9957 4,328,042 13 26 .033313099
F1 4,628,089 1.0496 4,409,384 5 8 .024676634
L1 4,492,014 0.9416 4,770,618 7 116 .002331200
L1 4,582,365 1.0748 4,263,458 5 24 .011593055
L1 4,852,646 0.9893 4,905,131 4 9 .000131195
L1 3,792,184 0.9921 3,822,381 2 3 .000759842
Random Totals: 196,559,700   217,955,816 130 3,034  
Catg J Exception Values: 44,381,462   38,480,858      
Catg D1 Exception Values: 14,770,893   10,223,420      
Catg F1 Exception Values: 3,359,800   3,437,254      
Total Test Values (4): 259,071,855   270,097,348      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,504,867

Confidence Interval Values (5)

State Lower Limit: 256,592,481 (State Test Value minus Margin of Error Percent)
Local Test Value: 259,071,855 (Within Confidence Interval)
State Upper Limit: 283,602,215 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 245,068,828 (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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