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2007 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 208,907,541 0.9360 223,191,817 58 1,765 .020160122
A 208,872,156 0.9967 209,563,716 58 1,061 .017071680
A 208,774,539 0.9796 213,122,233 58 727 .026796746
A 208,671,782 0.9750 214,022,341 58 431 .015210199
F1 20,849,186 0.9098 22,916,230 7 166 .013437766
F1 20,734,471 0.9867 21,013,957 6 47 .001842947
F1 21,140,777 0.9146 23,114,779 6 21 .023814239
F1 19,961,473 0.9653 20,679,036 3 6 .004633918
Random Totals: 917,911,925   947,624,109 254 4,224  
Catg D1 Exception Values: 20,770,700   14,026,958      
Total Test Values (4): 938,682,625   961,651,067      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 48,082,553

Confidence Interval Values (5)

State Lower Limit: 913,568,514 (State Test Value minus Margin of Error Percent)
Local Test Value: 938,682,625 (Within Confidence Interval)
State Upper Limit: 1,009,733,620 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,089,550,944 (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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