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2008 Confidence Interval Detail
152/Lubbock
152-906/Lubbock-Cooper ISD

Category Summary

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

Stratum
Variance
A 223,439,612 0.9588 233,040,897 65 1,988 .017999708
A 239,202,707 1.0067 237,610,715 65 1,362 .005252243
A 205,043,580 0.9842 208,335,277 43 802 .009164788
A 278,648,406 1.0016 278,203,281 33 647 .005825256
F1 23,482,088 1.0882 21,578,835 7 184 .110535291
F1 24,467,274 1.0949 22,346,583 6 56 .074605135
F1 30,392,612 1.1732 25,905,738 5 26 .027220149
F1 22,090,934 1.2831 17,216,845 3 6 .009413806
Random Totals: 1,046,767,213   1,044,238,171 227 5,071  
Catg D1 Exception Values: 21,603,655   16,329,560      
Total Test Values (4): 1,068,370,868   1,060,567,731      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 53,028,387

Confidence Interval Values (5)

State Lower Limit: 1,007,539,344 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,068,370,868 (Within Confidence Interval)
State Upper Limit: 1,113,596,118 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,225,362,369 (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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