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2007 Confidence Interval Detail
152/Lubbock
152-909/Shallowater ISD

Category Summary

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

Stratum
Variance
A 28,563,213 0.7750 36,855,759 15 578 .028659193
A 28,514,800 0.9327 30,572,317 15 299 .026441895
A 28,484,005 1.0388 27,420,105 17 184 .048074158
A 28,424,710 1.0633 26,732,540 19 120 .110123012
D3 11,179,101 0.9229 12,113,014 26 667 .193840241
G1 12,007,875 0.8668 13,853,109 7 28 .044110471
Random Totals: 137,173,704   147,546,844 99 1,876  
Catg D1 Exception Values: 14,905,875   10,153,320      
Catg G1 Exception Values: 12,199,627   11,651,186      
Total Test Values (4): 164,279,206   169,351,350      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 8,467,568

Confidence Interval Values (5)

State Lower Limit: 160,883,782 (State Test Value minus Margin of Error Percent)
Local Test Value: 164,279,206 (Within Confidence Interval)
State Upper Limit: 177,818,918 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 182,771,925 (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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