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2011 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 313,309,092 1.0015 312,839,832 60 2,431 .004163054
A 316,050,763 0.9825 321,680,166 55 1,650 .007181328
A 317,157,388 1.0030 316,208,762 42 1,111 .005511843
A 354,836,752 1.0135 350,110,263 27 713 .005744131
F1 38,965,452 1.0291 37,863,621 10 206 .099115764
F1 47,606,265 1.0218 46,590,590 8 68 .005402355
F1 34,172,804 1.0123 33,757,586 7 19 .022150008
F1 35,837,783 0.9545 37,546,132 4 6 .008517992
Random Totals: 1,457,936,299   1,456,596,952 213 6,204  
Catg D1 Exception Values: 19,996,080   18,030,843      
Total Test Values (4): 1,477,932,379   1,474,627,795      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 73,731,390

Confidence Interval Values (5)

State Lower Limit: 1,400,896,405 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,477,932,379 (Within Confidence Interval)
State Upper Limit: 1,548,359,185 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,627,510,477 (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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