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2006 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 25,162,595 0.7892 31,883,673 15 553 .254843779
A 25,221,952 0.8334 30,263,921 18 293 .065303063
A 25,103,063 0.9445 26,578,150 15 185 .011855776
A 25,099,973 0.9299 26,992,121 15 116 .005940472
D3 8,890,213 0.9007 9,870,338 23 679 .170870808
G1 10,391,247 0.9615 10,807,329 9 29 .005982943
Random Totals: 119,869,043   136,395,532 95 1,855  
Catg D1 Exception Values: 11,069,704   6,878,479      
Catg G1 Exception Values: 9,410,239   9,848,021      
Total Test Values (4): 140,348,986   153,122,032      

Margin of Error

Margin of Error Percent: 6.0021408
Margin of Error Value: 9,190,600

Confidence Interval Values (5)

Local Test Value: 140,348,986 (Outside Confidence Interval)
State Lower Limit: 143,931,432 (State Test Value minus Margin of Error Percent)
State Upper Limit: 162,312,632 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 155,429,843 (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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