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2011 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 33,855,272 0.9935 34,076,771 10 617 .016843011
A 33,446,484 0.9182 36,426,142 10 295 .016006582
A 33,110,586 0.9389 35,265,296 10 186 .007160235
A 38,885,907 0.9788 39,728,144 12 140 .008152674
G1 26,571,754 1.0046 26,450,084 8 32 .002931722
Random Totals: 165,870,003   171,946,437 50 1,270  
Catg D1 Exception Values: 14,597,187   13,121,592      
Catg G1 Exception Values: 30,243,959   29,740,372      
Total Test Values (4): 210,711,149   214,808,401      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,740,420

Confidence Interval Values (5)

State Lower Limit: 204,067,981 (State Test Value minus Margin of Error Percent)
Local Test Value: 210,711,149 (Within Confidence Interval)
State Upper Limit: 225,548,821 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 254,112,456 (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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