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2006 Confidence Interval Detail
152/Lubbock
152-901/Lubbock ISD

Category Summary

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

Stratum
Variance
A 1,095,068,585 0.9584 1,142,600,777 64 17,692 .016121180
A 1,094,976,591 0.9627 1,137,401,673 64 11,301 .009394205
A 1,095,134,802 0.9944 1,101,302,094 64 7,975 .007946644
A 1,094,854,443 0.9563 1,144,885,959 64 4,062 .009790471
B 167,645,149 0.8314 201,641,988 9 1,310 .020869005
B 168,062,745 0.9290 180,907,153 10 510 .073681944
B 168,143,742 0.8305 202,460,857 7 54 .058069282
B 166,465,216 1.0149 164,021,299 5 13 .015005340
F1 375,191,642 1.0241 366,362,310 23 1,631 .037733304
F1 375,354,327 0.8810 426,054,855 15 459 .186041022
F1 377,431,035 0.8848 426,572,146 14 158 .026235766
F1 370,919,190 0.8837 419,734,288 10 33 .019136524
L1 203,160,538 0.9408 215,944,449 7 2,094 .009685704
L1 203,159,523 0.9837 206,525,895 7 304 .000424433
L1 207,004,669 1.0136 204,227,179 6 88 .004915528
L1 198,722,123 0.9878 201,176,476 5 19 .000130862
Random Totals: 7,361,294,320   7,741,819,398 374 47,703  
Catg D1 Exception Values: 2,506,760   1,548,700      
Total Test Values (4): 7,363,801,080   7,743,368,098      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 387,168,405

Confidence Interval Values (5)

State Lower Limit: 7,356,199,693 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,363,801,080 (Within Confidence Interval)
State Upper Limit: 8,130,536,503 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,431,976,455 (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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