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2008 Confidence Interval Detail
152/Lubbock
152-902/New Deal ISD

Category Summary

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

Stratum
Variance
A 12,226,957 0.8106 15,083,835 15 385 .093352159
A 11,922,617 0.9307 12,810,376 17 169 .033507732
A 15,002,191 0.9155 16,386,883 15 144 .097687244
A 19,537,532 0.9944 19,647,558 16 110 .055653160
D3 19,748,142 0.9037 21,852,542 22 1,200 .041506973
G1 8,876,332 0.8517 10,421,900 5 13 .066701582
Random Totals: 87,313,771   96,203,094 90 2,021  
Catg J Exception Values: 5,469,517   5,548,569      
Catg D1 Exception Values: 25,510,214   18,193,185      
Catg G1 Exception Values: 11,927,296   11,483,527      
Total Test Values (4): 130,220,798   131,428,375      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 6,571,419

Confidence Interval Values (5)

State Lower Limit: 124,856,956 (State Test Value minus Margin of Error Percent)
Local Test Value: 130,220,798 (Within Confidence Interval)
State Upper Limit: 137,999,794 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 177,771,287 (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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